C M Orr
Biographic Data
| ID | 55496 |
|---|---|
| NAME | C M Orr |
| GIVEN NAMES | C M |
| FAMILY NAME | Orr |
| SIGNATURE | ORR C M |
| AFFILIATIONS | University of Colorado Denver |
| ORCID | 0000-0003-1156-1543 |
| VERIFIED | Yes |
| TOTAL WORKS | 27 |
| TOTAL CITATIONS | 274 |
| WORKS AS AUTHOR | 27 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2001 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 8 |
Pedal and Manual Proximal Phalangeal Curvatures Among Pongo abelii and Pongo pygmaeus
Nouvelles recherches et données sur les sites liguriens du Riparo Bombrini (Balzi Rossi, Imperia) et de l’Arma Veirana (Erli, Savona)
Mary Marzke, PhD
Carpal kinematics and morphological correlates of wrist ulnar deviation mobility in nonhuman anthropoid primates
Tiny hominin limbs and collaboration with a giant in the field of paleoanthropology
A geometric morphometric approach to investigate primate proximal phalanx diaphysis shape
Current approaches to quantify phalangeal curvature assume that the long axis of the bone's diaphysis approximates the shape of a portion of a circle (included angle method) or a parabola (second‐degree polynomial method). Here we developed, tested, and employed an alternative geometric morphometrics‐based (GM) approach to quantify diaphysis shape of proximal phalanges in humans, apes and monkeys with diverse locomotor behaviors. One hundred land…
The Ornaments of the Arma Veirana Early Mesolithic Infant Burial
The online version contains supplementary material available at 10.1007/s10816-022-09573-7
Homo naledi pollical metacarpal shaft morphology is distinctive and intermediate between that of australopiths and other members of the genus Homo
Evolutionary trends of the lateral foot in catarrhine primates
Strength properties of extant hominoid hallucal and pollical metapodials
Inter-ray variation in metatarsal strength properties in humans and African apes
Kinematics of the anthropoid os centrale and the functional consequences of scaphoid-centrale fusion in African apes and hominins
The Human Fossil Record of Bulgaria and the Formulation of Biogeographic Hypotheses
The evolutionary origin and population history of the grauer gorilla
Gorillas living in western central Africa (Gorilla gorilla) are morphologically and genetically distinguishable from those living in eastern central Africa (Gorilla beringei). Genomic analyses show eastern gorillas experienced a significant reduction in population size during the Pleistocene subsequent to geographical isolation from their western counterparts. However, how these results relate more specifically to the recent biogeographical and e…
The hand of Homo naledi
A nearly complete right hand of an adult hominin was recovered from the Rising Star cave system, South Africa. Based on associated hominin material, the bones of this hand are attributed to Homo naledi . This hand reveals a long, robust thumb and derived wrist morphology that is shared with Neandertals and modern humans, and considered adaptive for intensified manual manipulation. However, the finger bones are longer and more curved than in most …
Functional morphology of the hallucal metatarsal with implications for inferring grasping ability in extinct primates
Primate evolutionary morphologists have argued that selection for life in a fine branch niche resulted in grasping specializations that are reflected in the hallucal metatarsal (Mt1) morphology of extant “prosimians”, while a transition to use of relatively larger, horizontal substrates explains the apparent loss of such characters in anthropoids. Accordingly, these morphological characters—Mt1 torsion, peroneal process length and thickness, and …
Functional aspects of metatarsal head shape in humans, apes, and Old World monkeys
Ecological divergence and talar morphology in gorillas
Gorillas occupy a variety of habitats from the west coast to eastern central Africa. These habitats differ considerably in altitude, which has a pronounced effect on forest ecology. Although all gorillas are obligate terrestrial knuckle‐walking quadrupeds, those that live in lowland habitats eat fruits and climb more often than do those living in highland habitats. Here we test the hypothesis that gorilla talus morphology falls along a morphoclin…
New wrist bones of Homo floresiensis from Liang Bua (Flores, Indonesia)
Ecological divergence and medial cuneiform morphology in gorillas
Comparative 3D quantitative analyses of trapeziometacarpal joint surface curvatures among living catarrhines and fossil hominins
Comparisons of joint surface curvature at the base of the thumb have long been made to discern differences among living and fossil primates in functional capabilities of the hand. However, the complex shape of this joint makes it difficult to quantify differences among taxa. The purpose of this study is to determine whether significant differences in curvature exist among selected catarrhine genera and to compare these genera with hominin 1 fossi…
Descriptions of the upper limb skeleton of Homo floresiensis
The evolutionary history of the hominin hand since the last common ancestor of Pan and Homo
Molecular evidence indicates that the last common ancestor of the genus Pan and the hominin clade existed between 8 and 4 million years ago (Ma). The current fossil record indicates the Pan‐Homo last common ancestor existed at least 5 Ma and most likely between 6 and 7 Ma. Together, the molecular and fossil evidence has important consequences for interpreting the evolutionary history of the hand within the tribe Hominini (hominins). Firstly, pars…
The Primitive Wrist of Homo floresiensis and Its Implications for Hominin Evolution
Whether the Late Pleistocene hominin fossils from Flores, Indonesia, represent a new species, Homo floresiensis, or pathological modern humans has been debated. Analysis of three wrist bones from the holotype specimen (LB1) shows that it retains wrist morphology that is primitive for the African ape-human clade. In contrast, Neandertals and modern humans share derived wrist morphology that forms during embryogenesis, which diminishes the probabil…
Knuckle‐walking anteater
Appeals to synapomorphic features of the wrist and hand in African apes, early hominins, and modern humans as evidence of knuckle‐walking ancestry for the hominin lineage rely on accurate interpretations of those features as adaptations to knuckle‐walking locomotion. Because Gorilla , Pan , and Homo share a relatively close common ancestor, the interpretation of such features is confounded somewhat by phylogeny. The study presented here examines …
Descriptions of the upper limb skeleton of Homo floresiensis
Comparative 3D quantitative analyses of trapeziometacarpal joint surface curvatures among living catarrhines and fossil hominins
Comparisons of joint surface curvature at the base of the thumb have long been made to discern differences among living and fossil primates in functional capabilities of the hand. However, the complex shape of this joint makes it difficult to quantify differences among taxa. The purpose of this study is to determine whether significant differences in curvature exist among selected catarrhine genera and to compare these genera with hominin 1 fossi…
Ecological divergence and medial cuneiform morphology in gorillas
Ecological divergence and talar morphology in gorillas
Gorillas occupy a variety of habitats from the west coast to eastern central Africa. These habitats differ considerably in altitude, which has a pronounced effect on forest ecology. Although all gorillas are obligate terrestrial knuckle‐walking quadrupeds, those that live in lowland habitats eat fruits and climb more often than do those living in highland habitats. Here we test the hypothesis that gorilla talus morphology falls along a morphoclin…
New wrist bones of Homo floresiensis from Liang Bua (Flores, Indonesia)
Knuckle‐walking anteater
Appeals to synapomorphic features of the wrist and hand in African apes, early hominins, and modern humans as evidence of knuckle‐walking ancestry for the hominin lineage rely on accurate interpretations of those features as adaptations to knuckle‐walking locomotion. Because Gorilla , Pan , and Homo share a relatively close common ancestor, the interpretation of such features is confounded somewhat by phylogeny. The study presented here examines …
Functional aspects of metatarsal head shape in humans, apes, and Old World monkeys
Homo naledi pollical metacarpal shaft morphology is distinctive and intermediate between that of australopiths and other members of the genus Homo
Inter-ray variation in metatarsal strength properties in humans and African apes
Functional morphology of the hallucal metatarsal with implications for inferring grasping ability in extinct primates
Primate evolutionary morphologists have argued that selection for life in a fine branch niche resulted in grasping specializations that are reflected in the hallucal metatarsal (Mt1) morphology of extant “prosimians”, while a transition to use of relatively larger, horizontal substrates explains the apparent loss of such characters in anthropoids. Accordingly, these morphological characters—Mt1 torsion, peroneal process length and thickness, and …
The Ornaments of the Arma Veirana Early Mesolithic Infant Burial
The online version contains supplementary material available at 10.1007/s10816-022-09573-7
The evolutionary origin and population history of the grauer gorilla
Gorillas living in western central Africa (Gorilla gorilla) are morphologically and genetically distinguishable from those living in eastern central Africa (Gorilla beringei). Genomic analyses show eastern gorillas experienced a significant reduction in population size during the Pleistocene subsequent to geographical isolation from their western counterparts. However, how these results relate more specifically to the recent biogeographical and e…
Strength properties of extant hominoid hallucal and pollical metapodials
Kinematics of the anthropoid os centrale and the functional consequences of scaphoid-centrale fusion in African apes and hominins
Tiny hominin limbs and collaboration with a giant in the field of paleoanthropology
A comparison of anthropometric indices of nutritional status in Tukanoan and Achuar Amerindians
Anthropometric data from a Tukanoan population in the Vaupes region of Colombia and an Achuar population in the Ecuadorian Amazon were compared relative to international references. The Tukanoans exploit an oligotrophic blackwater ecosystem, whereas the Achuar inhabit a resource rich montane ecosystem. Given this ecological distinction, three hypotheses regarding nutritional statuses were proposed: (1) Tukanoans are significantly shorter than the…
A comparison of anthropometric indices of nutritional status in Tukanoan and Achuar Amerindians
Anthropometric data from a Tukanoan population in the Vaupes region of Colombia and an Achuar population in the Ecuadorian Amazon were compared relative to international references. The Tukanoans exploit an oligotrophic blackwater ecosystem, whereas the Achuar inhabit a resource rich montane ecosystem. Given this ecological distinction, three hypotheses regarding nutritional statuses were proposed: (1) Tukanoans are significantly shorter than the…
Knuckle‐walking anteater
Appeals to synapomorphic features of the wrist and hand in African apes, early hominins, and modern humans as evidence of knuckle‐walking ancestry for the hominin lineage rely on accurate interpretations of those features as adaptations to knuckle‐walking locomotion. Because Gorilla , Pan , and Homo share a relatively close common ancestor, the interpretation of such features is confounded somewhat by phylogeny. The study presented here examines …
The Primitive Wrist of Homo floresiensis and Its Implications for Hominin Evolution
Whether the Late Pleistocene hominin fossils from Flores, Indonesia, represent a new species, Homo floresiensis, or pathological modern humans has been debated. Analysis of three wrist bones from the holotype specimen (LB1) shows that it retains wrist morphology that is primitive for the African ape-human clade. In contrast, Neandertals and modern humans share derived wrist morphology that forms during embryogenesis, which diminishes the probabil…
The evolutionary history of the hominin hand since the last common ancestor of Pan and Homo
Molecular evidence indicates that the last common ancestor of the genus Pan and the hominin clade existed between 8 and 4 million years ago (Ma). The current fossil record indicates the Pan‐Homo last common ancestor existed at least 5 Ma and most likely between 6 and 7 Ma. Together, the molecular and fossil evidence has important consequences for interpreting the evolutionary history of the hand within the tribe Hominini (hominins). Firstly, pars…
Descriptions of the upper limb skeleton of Homo floresiensis
Comparative 3D quantitative analyses of trapeziometacarpal joint surface curvatures among living catarrhines and fossil hominins
Comparisons of joint surface curvature at the base of the thumb have long been made to discern differences among living and fossil primates in functional capabilities of the hand. However, the complex shape of this joint makes it difficult to quantify differences among taxa. The purpose of this study is to determine whether significant differences in curvature exist among selected catarrhine genera and to compare these genera with hominin 1 fossi…
Ecological divergence and medial cuneiform morphology in gorillas
New wrist bones of Homo floresiensis from Liang Bua (Flores, Indonesia)
Ecological divergence and talar morphology in gorillas
Gorillas occupy a variety of habitats from the west coast to eastern central Africa. These habitats differ considerably in altitude, which has a pronounced effect on forest ecology. Although all gorillas are obligate terrestrial knuckle‐walking quadrupeds, those that live in lowland habitats eat fruits and climb more often than do those living in highland habitats. Here we test the hypothesis that gorilla talus morphology falls along a morphoclin…
The hand of Homo naledi
A nearly complete right hand of an adult hominin was recovered from the Rising Star cave system, South Africa. Based on associated hominin material, the bones of this hand are attributed to Homo naledi . This hand reveals a long, robust thumb and derived wrist morphology that is shared with Neandertals and modern humans, and considered adaptive for intensified manual manipulation. However, the finger bones are longer and more curved than in most …
Functional morphology of the hallucal metatarsal with implications for inferring grasping ability in extinct primates
Primate evolutionary morphologists have argued that selection for life in a fine branch niche resulted in grasping specializations that are reflected in the hallucal metatarsal (Mt1) morphology of extant “prosimians”, while a transition to use of relatively larger, horizontal substrates explains the apparent loss of such characters in anthropoids. Accordingly, these morphological characters—Mt1 torsion, peroneal process length and thickness, and …
Functional aspects of metatarsal head shape in humans, apes, and Old World monkeys
The Human Fossil Record of Bulgaria and the Formulation of Biogeographic Hypotheses
The evolutionary origin and population history of the grauer gorilla
Gorillas living in western central Africa (Gorilla gorilla) are morphologically and genetically distinguishable from those living in eastern central Africa (Gorilla beringei). Genomic analyses show eastern gorillas experienced a significant reduction in population size during the Pleistocene subsequent to geographical isolation from their western counterparts. However, how these results relate more specifically to the recent biogeographical and e…
Inter-ray variation in metatarsal strength properties in humans and African apes
Kinematics of the anthropoid os centrale and the functional consequences of scaphoid-centrale fusion in African apes and hominins
Strength properties of extant hominoid hallucal and pollical metapodials
Homo naledi pollical metacarpal shaft morphology is distinctive and intermediate between that of australopiths and other members of the genus Homo
Evolutionary trends of the lateral foot in catarrhine primates
A geometric morphometric approach to investigate primate proximal phalanx diaphysis shape
Current approaches to quantify phalangeal curvature assume that the long axis of the bone's diaphysis approximates the shape of a portion of a circle (included angle method) or a parabola (second‐degree polynomial method). Here we developed, tested, and employed an alternative geometric morphometrics‐based (GM) approach to quantify diaphysis shape of proximal phalanges in humans, apes and monkeys with diverse locomotor behaviors. One hundred land…
The Ornaments of the Arma Veirana Early Mesolithic Infant Burial
The online version contains supplementary material available at 10.1007/s10816-022-09573-7
Tiny hominin limbs and collaboration with a giant in the field of paleoanthropology
Mary Marzke, PhD
Carpal kinematics and morphological correlates of wrist ulnar deviation mobility in nonhuman anthropoid primates
Biology (21 works) · Primate Behavior and Ecology (18 works) · Evolutionary biology (16 works) · Paleontology (15 works) · Pleistocene-Era Hominins and Archaeology (15 works) · Anatomy (14 works) · Anatomy (13 works) · Biological evolution (13 works) · Geography (13 works) · Hominidae (13 works)