Michael I Siegel
Dados Biográficos
| ID | 81124 |
|---|---|
| NOME | Michael I Siegel |
| PRENOMES | Michael I |
| SOBRENOME | Siegel |
| ASSINATURA | SIEGEL M I |
| AFILIAÇÕES | University of Pittsburgh |
| ORCID | 0000-0002-1483-5530 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 26 |
| TOTAL DE CITAÇÕES | 187 |
| TOTAL COMO AUTOR | 26 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1970 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2021 |
| ÍNDICE H | 7 |
Varieties of public–private co-governance on cybersecurity within the digital trade
Cybersecurity is becoming an increasing hurdle for digital trade. The governance of cybersecurity in the global digital trade system is a bottom-up approach, where governments are implementing fragmental and inconsistent trade policies and forming different models of public–private co-governance. Based on network-governance theory, information security behavior theory, and international risk theory, we develop a conceptual model to investigate ho…
Comparative microcomputed tomography and histological study of maxillary pneumatization in four species of new world monkeys
In anthropoid primates, it has been hypothesized that the magnitude of maxillary sinus growth is influenced by adjacent dental and soft tissue matrices. Relatively, little comparative evidence exists for the perinatal period when secondary pneumatization is at its earliest stages in some primates. Here, dental and midfacial variables were studied in a perinatal sample of four anthropoid primates, including three callitrichines ( Leontopithecus , …
Brief communication
Ectocranial suture fusion patterns have been shown to contain biological and phylogenetic information. Previously the patterns of Homo , Pan , and Gorilla have been described. These data reflect the phylogenetic relationships among these species. In this study, we applied similar methodology to Pongo to determine the suture synostosis progression of this genus, and to allow comparison to previously reported data on other large‐bodied hominoids. W…
Ontogenetic characteristics of the vomeronasal organ in Saguinus geoffroyi and Leontopithecus rosalia , with comparisons to other primates
It has been suggested that the variability of the primate vomeronasal organ (VNO) may be greater than previously thought, especially among New World monkeys. It is not clear to what extent VNO variation reflects ontogenetic, functional, or phylogenetic differences among primates. The present study investigated VNO anatomy in an ontogenetic series of two genera of callitrichid primates, in order to assess recent attempts to develop VNO character s…
“Month of birth effect” does not alter longitudinal growth in an experimental animal model
Previous cross-sectional human and animal data collected in the southern hemisphere suggest that month of birth influences growth throughout life; individuals born between August and January (spring/summer) were larger than individuals born between February and July (fall/winter) throughout their life cycle. It has been suggested that there is some form of annual global variation which may be caused by extraterrestrial factors. The present study,…
Sutural bone frequency in synostotic rabbit crania
This study tests the hypothesis that crania with synostosed sutures will have a significantly higher incidence of calvarial sutural bones than normal crania. Sutural bones were counted in seven calvarial sutures and compared among four groups of adult New Zealand white rabbit skulls: normal in-colony (NI) controls (N = 14), normal out-colony (NO) controls (N = 12), skulls with familial delayed onset (DO) coronal synostosis (N = 25), and skulls wi…
Longitudinal study of dental development in chimpanzees of known chronological age
Reconstruction of life history variables of fossil hominids on the basis of dental development requires understanding of and comparison with the pattern and timing of dental development among both living humans and pongids. Whether dental development among living apes or humans provides a better model for comparison with that of Plio-Pleistocene hominids of the genus Australopithecus remains a contentious point. This paper presents new data on ch…
Reply to Drs. Simpson and McCollum
Multivariate analysis of second trimester midfacial morphology in normal and cleft lip and palate human fetal specimens
To better understand the contribution of congenital dysmorphogenesis to postnatal midfacial dysplasia in individuals with complete cleft lip and palate (CLP), a series of studies were undertaken to investigate age related changes in a number of midfacial components for a sample of 20 normal and 9 complete CLP second trimester fetal specimens. Using data from this sample, the present study assessed the complex multivariate relationships among thes…
Premaxillary‐maxillary suture fusion and anterior nasal tubercle morphology in the chimpanzee
The anterior nasal spine (ANS) is considered by some to be a unique characteristic of modern humans; however, it has been reported to occur in chimpanzees. Among human populations, ANS size correlates with facial prognathism and timing of premaxillary‐maxillary sutural fusion, which may have implications for models of midfacial growth. To investigate these questions, skulls from 55 chimpanzees ( Pan troglodytes ) (29 male, 26 female), ranging in …
Perinatal stress and increased fluctuating asymmetry of dental calcium in the laboratory rat
Recent studies have consistently reported an increased magnitude of fluctuating dental, long bone, and membranous bone asymmetry as a function of perinatal stress. The present study was designed to test the hypothesis that increases in the fluctuating asymmetry of calcium may be related to the metric changes in these calcium‐dependent systems. Pregnant rats were exposed to noise stress from conception through weaning. Bilateral lower first molars…
Prenatal stress and increased fluctuating asymmetry in the parietal bones of neonatal rats
Recent studies have reported increased fluctuating dental and long bone asymmetry in neonates as a function of prenatal stress. The present study was designed to assess the effects of prenatal stress on a third calcium‐dependent system, membranous bone. Pregnant rats were exposed to cold, heat, or noise from conception through parturition. Bilateral parietal bone lengths were measured in the term neonates. Levels of fluctuating asymmetry were fou…
The relationship between organ weights and body weights, facial dimensions, and dental dimensions in a population of olive baboons ( Papio cynocephalus anubis )
Questions concerned with the relationship between organ weights and body weight on an intraspecific level are best answered by using a sample of animals collected in the wild from a single locale during a single season. The organ weights and body weights for this study were obtained from the necropsy reports prepared in the field (Athi Plain, Kenya) by H. C. McGill, Jr. on 36 adult animals (18 males and 18 females). Dental and facial measurements…
Musculoskeletal scapular correlates of plantigrade and acrobatic positional activities in Papio cynocephalus anubis and Macaca fascicularis
This study investigates several musculoskeletal scapular correlates of quadrupedal behavior in predominantly plantigrade, Papio cynocephalus anubis and acrobatic, less plantigrade, Macaca fascicularis . Positional behaviors differ in these two primates reflecting the amount of time spent emphasizing one or the other of these captive behavioral regimes. Stresses associated with particular patterns of behavior result in different scapular morpholog…
Ancient Human Remains from Central Peru
Within the past 10 to 15 years human remains of great antiquity have been found in archaeological sites located in the highlands and coastal area of central Peru. The remains in this study have assigned radiocarbon dates of 6000-10,000 B.P. and consist of four naturally mummified (desiccated) human bodies and four virtually complete skeletons. They represent some of the oldest skeletal remains and certainly the oldest preserved bodies hitherto fo…
The interaction of stressors in the induction of increased levels of fluctuating asymmetry in the laboratory rat
Recent studies on fluctuating dental asymmetry have isolated single stressors as causative agents. Since most stressors are composite in nature, the present study was designed to determine the effects of the interaction of stressors in the induction of fluctuating dental asymmetry. Pregnant rats were assigned to one of six treatment groups and stressed with various combinations of heat, cold, noise and protein deprivation. The levels of fluctuati…
The effects of stress on cortical bone thickness in rodents
The right and left femora of three groups of rodents, cold stressed, noise stressed, and heat stressed, were sectioned transversely at the most inferior point of the third trochanter. Cortical bone thickness of the proximal section for all three groups was determined by measuring an enlargement obtained with a Wild stereo microscope with a camera lucida drawing attachment. Cold stressed animals were found to have significantly thinner cortical bo…
Additional Comments on Problems in the Interpretation of Neanderthal Speech Capabilities
The differential contribution of premaxillary, maxillary, and palatine dimensions to sexual dimorphism in the adult olive baboon (Papio cynocephalus anubis)
Heat stress, fluctuating asymmetry and prenatal selection in the laboratory rat
Recent studies have demonstrated that stress may increase the fluctuating asymmetry of teeth and limbs in laboratory animals. The present study investigates the effects of heat on such parameters. Pregnant laboratory rats are exposed to temperatures of 33°C during gestation. Increases in fluctuating asymmetry of dental dimensions as well as bone density are found for the pups of such females when compared to unstressed controls. A general increas…
Some Aspects of the Evolution of Early Hominid Sexual Dimorphism [and Comments and Reply]
This paper reviews the patterns of sexual dimorphism in the living higher primates and suggests criteria for sex determination in the australopithecines. Using the bimodal distribution for australopithecine canine breadths, sex determination for individual specimens is attempted. The pattern of sexual dimorphism in the australopithecines differs from that in other higher primates: posterior-tooth dimorphism, mandibular-corpus dimorphism, and prob…
Hand use and metacarpal robusticity in Catarrhini
The skeletal correlates of behavioral modification in the laboratory mouse ( Mus musculus )
The effects of behavioral modification on the skeletal morphology of the laboratory mouse ( Mus musculus ) are investigated. Climibing, with increrased prehensile use of the foot, is found to bring about significant changes in metatarsal and long bone morphology. Differences in metatarsal robusticity related to weight‐bearing differences associated with different locomotor patterns are reported for a natural history setting for Peromyscus
Some Problems in the Interpretation of Neanderthal Speech Capabilities
The relationship between facial proportions and root length in the dentition of dogs
The present analysis represents a follow‐up to a previous experimental study in which facial shortening obtained in rats by septum removal produced also shortening of the molar roots. In the present study relative root length was compared in short‐faced as against long‐faced dogs and significant correlations between relative facial length and dental root length were found. Root shortening in the maxilla of short‐faced dogs clusters around the are…
Some Aspects of the Evolution of Early Hominid Sexual Dimorphism [and Comments and Reply]
This paper reviews the patterns of sexual dimorphism in the living higher primates and suggests criteria for sex determination in the australopithecines. Using the bimodal distribution for australopithecine canine breadths, sex determination for individual specimens is attempted. The pattern of sexual dimorphism in the australopithecines differs from that in other higher primates: posterior-tooth dimorphism, mandibular-corpus dimorphism, and prob…
Heat stress, fluctuating asymmetry and prenatal selection in the laboratory rat
Recent studies have demonstrated that stress may increase the fluctuating asymmetry of teeth and limbs in laboratory animals. The present study investigates the effects of heat on such parameters. Pregnant laboratory rats are exposed to temperatures of 33°C during gestation. Increases in fluctuating asymmetry of dental dimensions as well as bone density are found for the pups of such females when compared to unstressed controls. A general increas…
The interaction of stressors in the induction of increased levels of fluctuating asymmetry in the laboratory rat
Recent studies on fluctuating dental asymmetry have isolated single stressors as causative agents. Since most stressors are composite in nature, the present study was designed to determine the effects of the interaction of stressors in the induction of fluctuating dental asymmetry. Pregnant rats were assigned to one of six treatment groups and stressed with various combinations of heat, cold, noise and protein deprivation. The levels of fluctuati…
Prenatal stress and increased fluctuating asymmetry in the parietal bones of neonatal rats
Recent studies have reported increased fluctuating dental and long bone asymmetry in neonates as a function of prenatal stress. The present study was designed to assess the effects of prenatal stress on a third calcium‐dependent system, membranous bone. Pregnant rats were exposed to cold, heat, or noise from conception through parturition. Bilateral parietal bone lengths were measured in the term neonates. Levels of fluctuating asymmetry were fou…
Premaxillary‐maxillary suture fusion and anterior nasal tubercle morphology in the chimpanzee
The anterior nasal spine (ANS) is considered by some to be a unique characteristic of modern humans; however, it has been reported to occur in chimpanzees. Among human populations, ANS size correlates with facial prognathism and timing of premaxillary‐maxillary sutural fusion, which may have implications for models of midfacial growth. To investigate these questions, skulls from 55 chimpanzees ( Pan troglodytes ) (29 male, 26 female), ranging in …
Some Problems in the Interpretation of Neanderthal Speech Capabilities
Varieties of public–private co-governance on cybersecurity within the digital trade
Cybersecurity is becoming an increasing hurdle for digital trade. The governance of cybersecurity in the global digital trade system is a bottom-up approach, where governments are implementing fragmental and inconsistent trade policies and forming different models of public–private co-governance. Based on network-governance theory, information security behavior theory, and international risk theory, we develop a conceptual model to investigate ho…
The relationship between organ weights and body weights, facial dimensions, and dental dimensions in a population of olive baboons ( Papio cynocephalus anubis )
Questions concerned with the relationship between organ weights and body weight on an intraspecific level are best answered by using a sample of animals collected in the wild from a single locale during a single season. The organ weights and body weights for this study were obtained from the necropsy reports prepared in the field (Athi Plain, Kenya) by H. C. McGill, Jr. on 36 adult animals (18 males and 18 females). Dental and facial measurements…
Musculoskeletal scapular correlates of plantigrade and acrobatic positional activities in Papio cynocephalus anubis and Macaca fascicularis
This study investigates several musculoskeletal scapular correlates of quadrupedal behavior in predominantly plantigrade, Papio cynocephalus anubis and acrobatic, less plantigrade, Macaca fascicularis . Positional behaviors differ in these two primates reflecting the amount of time spent emphasizing one or the other of these captive behavioral regimes. Stresses associated with particular patterns of behavior result in different scapular morpholog…
The effects of stress on cortical bone thickness in rodents
The right and left femora of three groups of rodents, cold stressed, noise stressed, and heat stressed, were sectioned transversely at the most inferior point of the third trochanter. Cortical bone thickness of the proximal section for all three groups was determined by measuring an enlargement obtained with a Wild stereo microscope with a camera lucida drawing attachment. Cold stressed animals were found to have significantly thinner cortical bo…
The relationship between facial proportions and root length in the dentition of dogs
The present analysis represents a follow‐up to a previous experimental study in which facial shortening obtained in rats by septum removal produced also shortening of the molar roots. In the present study relative root length was compared in short‐faced as against long‐faced dogs and significant correlations between relative facial length and dental root length were found. Root shortening in the maxilla of short‐faced dogs clusters around the are…
Comparative microcomputed tomography and histological study of maxillary pneumatization in four species of new world monkeys
In anthropoid primates, it has been hypothesized that the magnitude of maxillary sinus growth is influenced by adjacent dental and soft tissue matrices. Relatively, little comparative evidence exists for the perinatal period when secondary pneumatization is at its earliest stages in some primates. Here, dental and midfacial variables were studied in a perinatal sample of four anthropoid primates, including three callitrichines ( Leontopithecus , …
Ontogenetic characteristics of the vomeronasal organ in Saguinus geoffroyi and Leontopithecus rosalia , with comparisons to other primates
It has been suggested that the variability of the primate vomeronasal organ (VNO) may be greater than previously thought, especially among New World monkeys. It is not clear to what extent VNO variation reflects ontogenetic, functional, or phylogenetic differences among primates. The present study investigated VNO anatomy in an ontogenetic series of two genera of callitrichid primates, in order to assess recent attempts to develop VNO character s…
Multivariate analysis of second trimester midfacial morphology in normal and cleft lip and palate human fetal specimens
To better understand the contribution of congenital dysmorphogenesis to postnatal midfacial dysplasia in individuals with complete cleft lip and palate (CLP), a series of studies were undertaken to investigate age related changes in a number of midfacial components for a sample of 20 normal and 9 complete CLP second trimester fetal specimens. Using data from this sample, the present study assessed the complex multivariate relationships among thes…
Ancient Human Remains from Central Peru
Within the past 10 to 15 years human remains of great antiquity have been found in archaeological sites located in the highlands and coastal area of central Peru. The remains in this study have assigned radiocarbon dates of 6000-10,000 B.P. and consist of four naturally mummified (desiccated) human bodies and four virtually complete skeletons. They represent some of the oldest skeletal remains and certainly the oldest preserved bodies hitherto fo…
The skeletal correlates of behavioral modification in the laboratory mouse ( Mus musculus )
The effects of behavioral modification on the skeletal morphology of the laboratory mouse ( Mus musculus ) are investigated. Climibing, with increrased prehensile use of the foot, is found to bring about significant changes in metatarsal and long bone morphology. Differences in metatarsal robusticity related to weight‐bearing differences associated with different locomotor patterns are reported for a natural history setting for Peromyscus
Perinatal stress and increased fluctuating asymmetry of dental calcium in the laboratory rat
Recent studies have consistently reported an increased magnitude of fluctuating dental, long bone, and membranous bone asymmetry as a function of perinatal stress. The present study was designed to test the hypothesis that increases in the fluctuating asymmetry of calcium may be related to the metric changes in these calcium‐dependent systems. Pregnant rats were exposed to noise stress from conception through weaning. Bilateral lower first molars…
Additional Comments on Problems in the Interpretation of Neanderthal Speech Capabilities
The tail, locomotion and balance in mice
The locomotor patterns of normal and tailless mice were studied. Two modes of locomotion were observed suggesting that when deprived of their tails, mice must alter their locomotor patterns to assure good balance
Brief communication
Ectocranial suture fusion patterns have been shown to contain biological and phylogenetic information. Previously the patterns of Homo , Pan , and Gorilla have been described. These data reflect the phylogenetic relationships among these species. In this study, we applied similar methodology to Pongo to determine the suture synostosis progression of this genus, and to allow comparison to previously reported data on other large‐bodied hominoids. W…
The relationship between facial proportions and root length in the dentition of dogs
The present analysis represents a follow‐up to a previous experimental study in which facial shortening obtained in rats by septum removal produced also shortening of the molar roots. In the present study relative root length was compared in short‐faced as against long‐faced dogs and significant correlations between relative facial length and dental root length were found. Root shortening in the maxilla of short‐faced dogs clusters around the are…
The tail, locomotion and balance in mice
The locomotor patterns of normal and tailless mice were studied. Two modes of locomotion were observed suggesting that when deprived of their tails, mice must alter their locomotor patterns to assure good balance
Some Problems in the Interpretation of Neanderthal Speech Capabilities
Hand use and metacarpal robusticity in Catarrhini
The skeletal correlates of behavioral modification in the laboratory mouse ( Mus musculus )
The effects of behavioral modification on the skeletal morphology of the laboratory mouse ( Mus musculus ) are investigated. Climibing, with increrased prehensile use of the foot, is found to bring about significant changes in metatarsal and long bone morphology. Differences in metatarsal robusticity related to weight‐bearing differences associated with different locomotor patterns are reported for a natural history setting for Peromyscus
Some Aspects of the Evolution of Early Hominid Sexual Dimorphism [and Comments and Reply]
This paper reviews the patterns of sexual dimorphism in the living higher primates and suggests criteria for sex determination in the australopithecines. Using the bimodal distribution for australopithecine canine breadths, sex determination for individual specimens is attempted. The pattern of sexual dimorphism in the australopithecines differs from that in other higher primates: posterior-tooth dimorphism, mandibular-corpus dimorphism, and prob…
The differential contribution of premaxillary, maxillary, and palatine dimensions to sexual dimorphism in the adult olive baboon (Papio cynocephalus anubis)
Heat stress, fluctuating asymmetry and prenatal selection in the laboratory rat
Recent studies have demonstrated that stress may increase the fluctuating asymmetry of teeth and limbs in laboratory animals. The present study investigates the effects of heat on such parameters. Pregnant laboratory rats are exposed to temperatures of 33°C during gestation. Increases in fluctuating asymmetry of dental dimensions as well as bone density are found for the pups of such females when compared to unstressed controls. A general increas…
The effects of stress on cortical bone thickness in rodents
The right and left femora of three groups of rodents, cold stressed, noise stressed, and heat stressed, were sectioned transversely at the most inferior point of the third trochanter. Cortical bone thickness of the proximal section for all three groups was determined by measuring an enlargement obtained with a Wild stereo microscope with a camera lucida drawing attachment. Cold stressed animals were found to have significantly thinner cortical bo…
Additional Comments on Problems in the Interpretation of Neanderthal Speech Capabilities
The interaction of stressors in the induction of increased levels of fluctuating asymmetry in the laboratory rat
Recent studies on fluctuating dental asymmetry have isolated single stressors as causative agents. Since most stressors are composite in nature, the present study was designed to determine the effects of the interaction of stressors in the induction of fluctuating dental asymmetry. Pregnant rats were assigned to one of six treatment groups and stressed with various combinations of heat, cold, noise and protein deprivation. The levels of fluctuati…
Musculoskeletal scapular correlates of plantigrade and acrobatic positional activities in Papio cynocephalus anubis and Macaca fascicularis
This study investigates several musculoskeletal scapular correlates of quadrupedal behavior in predominantly plantigrade, Papio cynocephalus anubis and acrobatic, less plantigrade, Macaca fascicularis . Positional behaviors differ in these two primates reflecting the amount of time spent emphasizing one or the other of these captive behavioral regimes. Stresses associated with particular patterns of behavior result in different scapular morpholog…
Ancient Human Remains from Central Peru
Within the past 10 to 15 years human remains of great antiquity have been found in archaeological sites located in the highlands and coastal area of central Peru. The remains in this study have assigned radiocarbon dates of 6000-10,000 B.P. and consist of four naturally mummified (desiccated) human bodies and four virtually complete skeletons. They represent some of the oldest skeletal remains and certainly the oldest preserved bodies hitherto fo…
The relationship between organ weights and body weights, facial dimensions, and dental dimensions in a population of olive baboons ( Papio cynocephalus anubis )
Questions concerned with the relationship between organ weights and body weight on an intraspecific level are best answered by using a sample of animals collected in the wild from a single locale during a single season. The organ weights and body weights for this study were obtained from the necropsy reports prepared in the field (Athi Plain, Kenya) by H. C. McGill, Jr. on 36 adult animals (18 males and 18 females). Dental and facial measurements…
Prenatal stress and increased fluctuating asymmetry in the parietal bones of neonatal rats
Recent studies have reported increased fluctuating dental and long bone asymmetry in neonates as a function of prenatal stress. The present study was designed to assess the effects of prenatal stress on a third calcium‐dependent system, membranous bone. Pregnant rats were exposed to cold, heat, or noise from conception through parturition. Bilateral parietal bone lengths were measured in the term neonates. Levels of fluctuating asymmetry were fou…
Perinatal stress and increased fluctuating asymmetry of dental calcium in the laboratory rat
Recent studies have consistently reported an increased magnitude of fluctuating dental, long bone, and membranous bone asymmetry as a function of perinatal stress. The present study was designed to test the hypothesis that increases in the fluctuating asymmetry of calcium may be related to the metric changes in these calcium‐dependent systems. Pregnant rats were exposed to noise stress from conception through weaning. Bilateral lower first molars…
Premaxillary‐maxillary suture fusion and anterior nasal tubercle morphology in the chimpanzee
The anterior nasal spine (ANS) is considered by some to be a unique characteristic of modern humans; however, it has been reported to occur in chimpanzees. Among human populations, ANS size correlates with facial prognathism and timing of premaxillary‐maxillary sutural fusion, which may have implications for models of midfacial growth. To investigate these questions, skulls from 55 chimpanzees ( Pan troglodytes ) (29 male, 26 female), ranging in …
Multivariate analysis of second trimester midfacial morphology in normal and cleft lip and palate human fetal specimens
To better understand the contribution of congenital dysmorphogenesis to postnatal midfacial dysplasia in individuals with complete cleft lip and palate (CLP), a series of studies were undertaken to investigate age related changes in a number of midfacial components for a sample of 20 normal and 9 complete CLP second trimester fetal specimens. Using data from this sample, the present study assessed the complex multivariate relationships among thes…
Reply to Drs. Simpson and McCollum
Longitudinal study of dental development in chimpanzees of known chronological age
Reconstruction of life history variables of fossil hominids on the basis of dental development requires understanding of and comparison with the pattern and timing of dental development among both living humans and pongids. Whether dental development among living apes or humans provides a better model for comparison with that of Plio-Pleistocene hominids of the genus Australopithecus remains a contentious point. This paper presents new data on ch…
“Month of birth effect” does not alter longitudinal growth in an experimental animal model
Previous cross-sectional human and animal data collected in the southern hemisphere suggest that month of birth influences growth throughout life; individuals born between August and January (spring/summer) were larger than individuals born between February and July (fall/winter) throughout their life cycle. It has been suggested that there is some form of annual global variation which may be caused by extraterrestrial factors. The present study,…
Sutural bone frequency in synostotic rabbit crania
This study tests the hypothesis that crania with synostosed sutures will have a significantly higher incidence of calvarial sutural bones than normal crania. Sutural bones were counted in seven calvarial sutures and compared among four groups of adult New Zealand white rabbit skulls: normal in-colony (NI) controls (N = 14), normal out-colony (NO) controls (N = 12), skulls with familial delayed onset (DO) coronal synostosis (N = 25), and skulls wi…
Ontogenetic characteristics of the vomeronasal organ in Saguinus geoffroyi and Leontopithecus rosalia , with comparisons to other primates
It has been suggested that the variability of the primate vomeronasal organ (VNO) may be greater than previously thought, especially among New World monkeys. It is not clear to what extent VNO variation reflects ontogenetic, functional, or phylogenetic differences among primates. The present study investigated VNO anatomy in an ontogenetic series of two genera of callitrichid primates, in order to assess recent attempts to develop VNO character s…
Brief communication
Ectocranial suture fusion patterns have been shown to contain biological and phylogenetic information. Previously the patterns of Homo , Pan , and Gorilla have been described. These data reflect the phylogenetic relationships among these species. In this study, we applied similar methodology to Pongo to determine the suture synostosis progression of this genus, and to allow comparison to previously reported data on other large‐bodied hominoids. W…
Comparative microcomputed tomography and histological study of maxillary pneumatization in four species of new world monkeys
In anthropoid primates, it has been hypothesized that the magnitude of maxillary sinus growth is influenced by adjacent dental and soft tissue matrices. Relatively, little comparative evidence exists for the perinatal period when secondary pneumatization is at its earliest stages in some primates. Here, dental and midfacial variables were studied in a perinatal sample of four anthropoid primates, including three callitrichines ( Leontopithecus , …
Biology (20 obras) · Anatomy (13 obras) · Medicine (11 obras) · Zoology (11 obras) · Anatomy (10 obras) · Ecology (6 obras) · Physiology (6 obras) · Primate Behavior and Ecology (6 obras) · Internal Medicine (5 obras) · Morphological variations and asymmetry (5 obras)