Richard A Ketcham
Biographic Data
| ID | 3073944 |
|---|---|
| NAME | Richard A Ketcham |
| GIVEN NAMES | Richard A |
| FAMILY NAME | Ketcham |
| SIGNATURE | KETCHAM R A |
| AFFILIATIONS | The University of Texas at Austin |
| ORCID | 0000-0002-2748-0409 |
| VERIFIED | Yes |
| TOTAL WORKS | 8 |
| TOTAL CITATIONS | 152 |
| AUTHOR COUNT | 8 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2002 |
| LATEST PUBLICATION YEAR | 2016 |
| H-INDEX | 6 |
Limb Bone Structural Proportions and Locomotor Behavior in A.L. 288-1 ("Lucy")
While there is broad agreement that early hominins practiced some form of terrestrial bipedality, there is also evidence that arboreal behavior remained a part of the locomotor repertoire in some taxa, and that bipedal locomotion may not have been identical to that of modern humans. It has been difficult to evaluate such evidence, however, because of the possibility that early hominins retained primitive traits (such as relatively long upper limb…
Trabecular bone structure in the mandibular condyles of gouging and nongouging platyrrhine primates
The relationship between mandibular form and biomechanical function is a topic of significant interest to morphologists and paleontologists alike. Several previous studies have examined the morphology of the mandible in gouging and nongouging primates as a means of understanding the anatomical correlates of this feeding behavior. The goal of the current study was to quantify the trabecular bone structure of the mandibular condyle of gouging and n…
Comparative forefoot trabecular bone architecture in extant hominids
Patterns in ontogeny of human trabecular bone from SunWatch Village in the Prehistoric Ohio Valley: General features of microarchitectural change
Although adult skeletal morphological variation is best understood within the framework of age‐related processes, relatively little research has been directed towards the structure of and variation in trabecular bone during ontogeny. We report here new quantitative and structural data on trabecular bone microarchitecture in the proximal tibia during growth and development, as demonstrated in a subadult archaeological skeletal sample from the Late…
Preliminary observations on the calcaneal trabecular microarchitecture of extant large‐bodied hominoids
In this pilot study, we point out potential differences between calcaneal trabecular microarchitecture in humans and nonhuman large apes, such as increased degree of anisotropy, reduced bone volume fraction, and very stereotypical orientation of the trabeculae. Even though sample size does not permit us to investigate the issue statistically, the observed differences between humans and other hominoids warrants further in‐depth investigation. We a…
Hoax or History: A Bison Skull with Embedded Calf Creek Projectile Point
The discovery of a bison skull with protruding sections of a Calf Creek projectile point on a sand bar along the Arkansas River near Tulsa, Oklahoma, is investigated using the techniques of high-resolution X-ray computed tomography (CT), biometrics, and radiocarbon assay to determine its authenticity. This high-tech approach permits evaluation of the find without the extraction of the point. Converging lines of evidence suggest the association is…
The three-dimensional structure of trabecular bone in the femoral head of strepsirrhine primates
Femoral head trabecular bone structure in two omomyid primates
The three-dimensional structure of trabecular bone in the femoral head of strepsirrhine primates
Preliminary observations on the calcaneal trabecular microarchitecture of extant large‐bodied hominoids
In this pilot study, we point out potential differences between calcaneal trabecular microarchitecture in humans and nonhuman large apes, such as increased degree of anisotropy, reduced bone volume fraction, and very stereotypical orientation of the trabeculae. Even though sample size does not permit us to investigate the issue statistically, the observed differences between humans and other hominoids warrants further in‐depth investigation. We a…
Femoral head trabecular bone structure in two omomyid primates
Patterns in ontogeny of human trabecular bone from SunWatch Village in the Prehistoric Ohio Valley: General features of microarchitectural change
Although adult skeletal morphological variation is best understood within the framework of age‐related processes, relatively little research has been directed towards the structure of and variation in trabecular bone during ontogeny. We report here new quantitative and structural data on trabecular bone microarchitecture in the proximal tibia during growth and development, as demonstrated in a subadult archaeological skeletal sample from the Late…
Comparative forefoot trabecular bone architecture in extant hominids
Trabecular bone structure in the mandibular condyles of gouging and nongouging platyrrhine primates
The relationship between mandibular form and biomechanical function is a topic of significant interest to morphologists and paleontologists alike. Several previous studies have examined the morphology of the mandible in gouging and nongouging primates as a means of understanding the anatomical correlates of this feeding behavior. The goal of the current study was to quantify the trabecular bone structure of the mandibular condyle of gouging and n…
The three-dimensional structure of trabecular bone in the femoral head of strepsirrhine primates
Femoral head trabecular bone structure in two omomyid primates
Hoax or History: A Bison Skull with Embedded Calf Creek Projectile Point
The discovery of a bison skull with protruding sections of a Calf Creek projectile point on a sand bar along the Arkansas River near Tulsa, Oklahoma, is investigated using the techniques of high-resolution X-ray computed tomography (CT), biometrics, and radiocarbon assay to determine its authenticity. This high-tech approach permits evaluation of the find without the extraction of the point. Converging lines of evidence suggest the association is…
Preliminary observations on the calcaneal trabecular microarchitecture of extant large‐bodied hominoids
In this pilot study, we point out potential differences between calcaneal trabecular microarchitecture in humans and nonhuman large apes, such as increased degree of anisotropy, reduced bone volume fraction, and very stereotypical orientation of the trabeculae. Even though sample size does not permit us to investigate the issue statistically, the observed differences between humans and other hominoids warrants further in‐depth investigation. We a…
Patterns in ontogeny of human trabecular bone from SunWatch Village in the Prehistoric Ohio Valley: General features of microarchitectural change
Although adult skeletal morphological variation is best understood within the framework of age‐related processes, relatively little research has been directed towards the structure of and variation in trabecular bone during ontogeny. We report here new quantitative and structural data on trabecular bone microarchitecture in the proximal tibia during growth and development, as demonstrated in a subadult archaeological skeletal sample from the Late…
Trabecular bone structure in the mandibular condyles of gouging and nongouging platyrrhine primates
The relationship between mandibular form and biomechanical function is a topic of significant interest to morphologists and paleontologists alike. Several previous studies have examined the morphology of the mandible in gouging and nongouging primates as a means of understanding the anatomical correlates of this feeding behavior. The goal of the current study was to quantify the trabecular bone structure of the mandibular condyle of gouging and n…
Comparative forefoot trabecular bone architecture in extant hominids
Limb Bone Structural Proportions and Locomotor Behavior in A.L. 288-1 ("Lucy")
While there is broad agreement that early hominins practiced some form of terrestrial bipedality, there is also evidence that arboreal behavior remained a part of the locomotor repertoire in some taxa, and that bipedal locomotion may not have been identical to that of modern humans. It has been difficult to evaluate such evidence, however, because of the possibility that early hominins retained primitive traits (such as relatively long upper limb…
Anatomy (7 works) · Biology (7 works) · Anatomy (6 works) · Primate Behavior and Ecology (6 works) · Trabecular bone (5 works) · Medicine (4 works) · Paleontology (4 works) · Amphibian and Reptile Biology (3 works) · Anisotropy (3 works) · Osteoporosis (3 works)