K Christopher Beard
Biographic Data
| ID | 77736 |
|---|---|
| NAME | K Christopher Beard |
| GIVEN NAMES | K Christopher |
| FAMILY NAME | Beard |
| SIGNATURE | BEARD K C |
| AFFILIATIONS | Carnegie Museum of Natural History |
| ORCID | 0000-0002-6279-9837 |
| VERIFIED | Yes |
| TOTAL WORKS | 40 |
| TOTAL CITATIONS | 326 |
| AUTHOR COUNT | 40 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1987 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 11 |
A diverse new omomyid primate fauna from the early Eocene of southern Wyoming with implications for interpreting macroevolutionary patterns among anaptomorphines
A richly fossiliferous sandstone outcrop in the Wasatch Formation, Great Divide Basin, southern Wyoming, has yielded exceptionally well-preserved fossils of three omomyid primates. Here we report new occurrences of two rarely documented omomyids, Arapahovius gazini and Anemorhysis savagei, describe a new species of Tetonius, and perform a phylogenetic analysis of Tetonius and its allies; the two previously described omomyids are new additions to …
New late middle Eocene anthropoids from Dur At-Talah, Libya: Implications for early primate dispersal into Afro-Arabia
A new large-bodied sivaladapid primate from the Eocene of Myanmar resolves phylogenetic conflict obscuring the anthropoid status of Amphipithecidae
Micro-computed tomography unveils anatomy of the oldest known plesiadapiform cranium
Phylogeny and paleobiogeography of the enigmatic North American primate Ekgmowechashala illuminated by new fossils from Nebraska (USA) and Guangxi Zhuang Autonomous Region (China)
Ekgmowechashala is a poorly documented but very distinctive primate known only from the late early Oligocene (early Arikareean) of western North America. Because of its highly autapomorphous dentition and spatiotemporal isolation, the phylogenetic and biogeographic affinities of Ekgmowechashala have long been debated. Here, we describe the oldest known fossils of Ekgmowechashala from the Brown Siltstone Beds of the Brule Formation, White River Gr…
A new parapithecine (Primates): (Anthropoidea) from the early Oligocene of Libya supports parallel evolution of large body size among parapithecids
Nasolacrimal anatomy and haplorhine origins
Cuboid morphology of a basal anthropoid from the Eocene of China
Phalangeal morphology of Shanghuang fossil primates
A new species of Apidium (Anthropoidea, Parapithecidae) from the Sirt Basin, central Libya: First record of Oligocene primates from Libya
Upper molar morphology of the early oligocene egyptian anthropoid Qatrania wingi
OBJECTIVES: Qatrania wingi is a poorly documented fossil anthropoid known only from Quarry E in the Jebel Qatrani Formation, Fayum Depression, Egypt. This report augments our knowledge of the dental morphology of Qatrania in order to clarify its phylogenetic relationships with other early African anthropoids. MATERIALS AND METHODS: YPM 18008 from Quarry E is the first example of an upper molar fragment that can reasonably be assigned to Qatrania …
Out of Asia: Anthropoid Origins and the Colonization of Africa
Anthropoid primates other than humans show a conspicuously disjunct geographic distribution today, inhabiting mostly tropical and subtropical parts of Asia, Africa, and Central and South America. During the latter part of the Eocene, early anthropoids showed a similarly disjunct distribution, although South America and Africa were both island continents then. Attempts to explain the historical biogeography of anthropoids as resulting from vicaria…
Distal phalanges of Eosimias and Hoanghonius
The oldest known primate skeleton and early haplorhine evolution
Uniquely derived upper molar morphology of Eocene Amphipithecidae (Primates): (Anthropoidea): Homology and phylogeny
Species diversity and postcranial anatomy of eocene primates from Shanghuang, China
The middle Eocene Shanghuang fissure-fillings, located in southern Jiangsu Province in China near the coastal city of Shanghai (Fig. 1), contain a remarkably diverse array of fossil primates that provide a unique window into the complex role played by Asia during early primate evolution.1 Compared to contemporaneous localities in North America or Europe, the ancient primate community sampled at the Shanghuang fissure-fillings is unique in several…
Talar morphology, phylogenetic affinities, and locomotor adaptation of a large‐bodied amphipithecid primate from the late middle eocene of Myanmar
A well‐preserved fossil talus [National Museum of Myanmar Primates (NMMP) 82] of a large‐bodied primate is described from the late middle Eocene Pondaung Formation of central Myanmar. The specimen was collected at Thandaung Kyitchaung, a well‐known amphipithecid primate–bearing locality near the village of Mogaung. NMMP 82 adds to a meager but growing sample of postcranial remains documenting the large‐bodied primates of the Pondaung Formation. T…
The phylogenetic affinities of the Pondaung tali
The phylogenetic affinities of the primates of the late middle Eocene Pondaung Formation of Myanmar have long been disputed. The discovery of the NMMP 39 talus (Marivaux et al.: Proc Natl Acad Sci USA 100 (2003) 13173–13178) provided the first clear evidence from the postcranium that a relatively large‐bodied haplorhine primate is represented in the Pondaung fauna. Another talus (NMMP 82; Marivaux et al., 2010). Talar morphology, phylogenetic aff…
Proximal femoral anatomy of a sivaladapid primate from the late middle Eocene Pondaung formation (central Myanmar)
The postcranial anatomy of the Asian sivaladapid adapiforms is still virtually undocumented, whereas dental remains of these primates have been known for several decades. Little is known about their positional behavior as a result. In this article, we describe a partial left femur of a medium‐sized primate preserving its entire proximal portion and a significant length of its shaft. This fossil was recently recovered from the fossiliferous locali…
Anatomy of the bony pelvis of a relatively large-bodied strepsirrhine primate from the late middle Eocene Pondaung Formation (central Myanmar)
New primate hind limb elements from the middle Eocene of China
Taxonomic status of purported primate frontal bones from the Eocene Pondaung Formation of Myanmar
The eosimiid primates (Anthropoidea) of the Heti Formation, Yuanqu Basin, Shanxi and Henan Provinces, People's Republic of China
Middle Eocene primate tarsals from China: Implications for haplorhine evolution
We describe tarsal remains of primates recovered from the Middle Eocene (∼45 mya) Shanghuang fissures in southern Jiangsu Province, China. These tarsals document the existence of four higher‐level taxa of haplorhine primates and at least two adapid species. The meager and poorly preserved adapid material exhibits some similarities to European adapines like Adapis . The haplorhine primates are divided into two major groups: a “prosimian group” con…
The smallest primates
Middle Eocene primate tarsals from China: Implications for haplorhine evolution
We describe tarsal remains of primates recovered from the Middle Eocene (∼45 mya) Shanghuang fissures in southern Jiangsu Province, China. These tarsals document the existence of four higher‐level taxa of haplorhine primates and at least two adapid species. The meager and poorly preserved adapid material exhibits some similarities to European adapines like Adapis . The haplorhine primates are divided into two major groups: a “prosimian group” con…
Challenges confronting cross-sex friendships: “Much ado about nothing?”
Late Eocene sivaladapid primate from Guangxi Zhuang Autonomous Region, People's Republic of China
The eosimiid primates (Anthropoidea) of the Heti Formation, Yuanqu Basin, Shanxi and Henan Provinces, People's Republic of China
Talar morphology, phylogenetic affinities, and locomotor adaptation of a large‐bodied amphipithecid primate from the late middle eocene of Myanmar
A well‐preserved fossil talus [National Museum of Myanmar Primates (NMMP) 82] of a large‐bodied primate is described from the late middle Eocene Pondaung Formation of central Myanmar. The specimen was collected at Thandaung Kyitchaung, a well‐known amphipithecid primate–bearing locality near the village of Mogaung. NMMP 82 adds to a meager but growing sample of postcranial remains documenting the large‐bodied primates of the Pondaung Formation. T…
The smallest primates
Significance of primate petrosal from Middle Eocene fissure-fillings at Shanghuang, Jiangsu Province, People's Republic of China
New hominoid facial skeleton from the Early Miocene of Rusinga Island, Kenya, and its bearing on the relationship between Proconsul nyanzae and Proconsul africanus
A hominoid proximal humerus from the Early Miocene of Rusinga Island, Kenya
Carpal anatomy of Smilodectes gracilis (Adapiformes, Notharctinae) and its significance for lemuriform phylogeny
New primate hind limb elements from the middle Eocene of China
The phylogenetic affinities of the Pondaung tali
The phylogenetic affinities of the primates of the late middle Eocene Pondaung Formation of Myanmar have long been disputed. The discovery of the NMMP 39 talus (Marivaux et al.: Proc Natl Acad Sci USA 100 (2003) 13173–13178) provided the first clear evidence from the postcranium that a relatively large‐bodied haplorhine primate is represented in the Pondaung fauna. Another talus (NMMP 82; Marivaux et al., 2010). Talar morphology, phylogenetic aff…
A first metatarsal of Hoanghonius stehlini from the Late Middle Eocene of Shanxi Province, China
The phylogenetic significance of strepsirhinism in Paleogene primates
New notharctine primate fossils from the early Eocene of New Mexico and southern Wyoming and the phylogeny of Notharctinae
Previously undescribed notharctine primate fossils are reported from the early Eocene San Jose Formation, San Juan Basin, New Mexico, and the early Eocene Wasatch Formation, southern Wyoming. These collections include the most complete specimens yet discovered of the poorly known species Copelemur tutus and Copelemur praetutus ; the first upper dentitions of Cantius angulatus and Cantius frugivorus from the type area of these taxa; and fossils at…
Taxonomic status of purported primate frontal bones from the Eocene Pondaung Formation of Myanmar
Phylogenetic and biogeographic significance of the tarsiiform primate Asiomomys changbaicus from the eocene of Jilin Province, people's Republic of China
A newly discovered Paleogene mammal locality in Jilin Province, People's Republic of China has yielded a dentary fragment of the tarsiiform primate Asiomomys changbaicus. Unlike most other Eocene primates from Asia, the phylogenetic position of A. changbaicus is well resolved: it represents the sister taxon of Stockia powayensis , a probable washakiin omomyid from the early Uintan of southern California. The phylogenetic position and geographic p…
Species diversity and postcranial anatomy of eocene primates from Shanghuang, China
The middle Eocene Shanghuang fissure-fillings, located in southern Jiangsu Province in China near the coastal city of Shanghai (Fig. 1), contain a remarkably diverse array of fossil primates that provide a unique window into the complex role played by Asia during early primate evolution.1 Compared to contemporaneous localities in North America or Europe, the ancient primate community sampled at the Shanghuang fissure-fillings is unique in several…
Anatomy of the bony pelvis of a relatively large-bodied strepsirrhine primate from the late middle Eocene Pondaung Formation (central Myanmar)
Jemezius, a new omomyid primate from the early Eocene of northwestern New Mexico
Uniquely derived upper molar morphology of Eocene Amphipithecidae (Primates): (Anthropoidea): Homology and phylogeny
Proximal femoral anatomy of a sivaladapid primate from the late middle Eocene Pondaung formation (central Myanmar)
The postcranial anatomy of the Asian sivaladapid adapiforms is still virtually undocumented, whereas dental remains of these primates have been known for several decades. Little is known about their positional behavior as a result. In this article, we describe a partial left femur of a medium‐sized primate preserving its entire proximal portion and a significant length of its shaft. This fossil was recently recovered from the fossiliferous locali…
Out of Asia: Anthropoid Origins and the Colonization of Africa
Anthropoid primates other than humans show a conspicuously disjunct geographic distribution today, inhabiting mostly tropical and subtropical parts of Asia, Africa, and Central and South America. During the latter part of the Eocene, early anthropoids showed a similarly disjunct distribution, although South America and Africa were both island continents then. Attempts to explain the historical biogeography of anthropoids as resulting from vicaria…
Nasolacrimal anatomy and haplorhine origins
Distal phalanges of Eosimias and Hoanghonius
Jemezius, a new omomyid primate from the early Eocene of northwestern New Mexico
The phylogenetic significance of strepsirhinism in Paleogene primates
New notharctine primate fossils from the early Eocene of New Mexico and southern Wyoming and the phylogeny of Notharctinae
Previously undescribed notharctine primate fossils are reported from the early Eocene San Jose Formation, San Juan Basin, New Mexico, and the early Eocene Wasatch Formation, southern Wyoming. These collections include the most complete specimens yet discovered of the poorly known species Copelemur tutus and Copelemur praetutus ; the first upper dentitions of Cantius angulatus and Cantius frugivorus from the type area of these taxa; and fossils at…
Carpal anatomy of Smilodectes gracilis (Adapiformes, Notharctinae) and its significance for lemuriform phylogeny
New hominoid facial skeleton from the Early Miocene of Rusinga Island, Kenya, and its bearing on the relationship between Proconsul nyanzae and Proconsul africanus
A hominoid proximal humerus from the Early Miocene of Rusinga Island, Kenya
Do we need the newly proposed order Proprimates
Fossil primate hands: A review and an evolutionary inquiry emphasizing early forms
Phylogenetic and biogeographic significance of the tarsiiform primate Asiomomys changbaicus from the eocene of Jilin Province, people's Republic of China
A newly discovered Paleogene mammal locality in Jilin Province, People's Republic of China has yielded a dentary fragment of the tarsiiform primate Asiomomys changbaicus. Unlike most other Eocene primates from Asia, the phylogenetic position of A. changbaicus is well resolved: it represents the sister taxon of Stockia powayensis , a probable washakiin omomyid from the early Uintan of southern California. The phylogenetic position and geographic p…
Cranial Anatomy of Shoshonius and the Antiquity of Anthropoidea
A diverse new primate fauna from middle Eocene fissure-fillings in southeastern China
Challenges confronting cross-sex friendships: “Much ado about nothing?”
Significance of primate petrosal from Middle Eocene fissure-fillings at Shanghuang, Jiangsu Province, People's Republic of China
Late Eocene sivaladapid primate from Guangxi Zhuang Autonomous Region, People's Republic of China
A first metatarsal of Hoanghonius stehlini from the Late Middle Eocene of Shanxi Province, China
The smallest primates
Middle Eocene primate tarsals from China: Implications for haplorhine evolution
We describe tarsal remains of primates recovered from the Middle Eocene (∼45 mya) Shanghuang fissures in southern Jiangsu Province, China. These tarsals document the existence of four higher‐level taxa of haplorhine primates and at least two adapid species. The meager and poorly preserved adapid material exhibits some similarities to European adapines like Adapis . The haplorhine primates are divided into two major groups: a “prosimian group” con…
The eosimiid primates (Anthropoidea) of the Heti Formation, Yuanqu Basin, Shanxi and Henan Provinces, People's Republic of China
Taxonomic status of purported primate frontal bones from the Eocene Pondaung Formation of Myanmar
Proximal femoral anatomy of a sivaladapid primate from the late middle Eocene Pondaung formation (central Myanmar)
The postcranial anatomy of the Asian sivaladapid adapiforms is still virtually undocumented, whereas dental remains of these primates have been known for several decades. Little is known about their positional behavior as a result. In this article, we describe a partial left femur of a medium‐sized primate preserving its entire proximal portion and a significant length of its shaft. This fossil was recently recovered from the fossiliferous locali…
Anatomy of the bony pelvis of a relatively large-bodied strepsirrhine primate from the late middle Eocene Pondaung Formation (central Myanmar)
New primate hind limb elements from the middle Eocene of China
Talar morphology, phylogenetic affinities, and locomotor adaptation of a large‐bodied amphipithecid primate from the late middle eocene of Myanmar
A well‐preserved fossil talus [National Museum of Myanmar Primates (NMMP) 82] of a large‐bodied primate is described from the late middle Eocene Pondaung Formation of central Myanmar. The specimen was collected at Thandaung Kyitchaung, a well‐known amphipithecid primate–bearing locality near the village of Mogaung. NMMP 82 adds to a meager but growing sample of postcranial remains documenting the large‐bodied primates of the Pondaung Formation. T…
The phylogenetic affinities of the Pondaung tali
The phylogenetic affinities of the primates of the late middle Eocene Pondaung Formation of Myanmar have long been disputed. The discovery of the NMMP 39 talus (Marivaux et al.: Proc Natl Acad Sci USA 100 (2003) 13173–13178) provided the first clear evidence from the postcranium that a relatively large‐bodied haplorhine primate is represented in the Pondaung fauna. Another talus (NMMP 82; Marivaux et al., 2010). Talar morphology, phylogenetic aff…
Species diversity and postcranial anatomy of eocene primates from Shanghuang, China
The middle Eocene Shanghuang fissure-fillings, located in southern Jiangsu Province in China near the coastal city of Shanghai (Fig. 1), contain a remarkably diverse array of fossil primates that provide a unique window into the complex role played by Asia during early primate evolution.1 Compared to contemporaneous localities in North America or Europe, the ancient primate community sampled at the Shanghuang fissure-fillings is unique in several…
Primate Behavior and Ecology (35 works) · Biology (32 works) · Paleontology (28 works) · Paleontology (27 works) · Evolution and Paleontology Studies (24 works) · Primate (21 works) · Taxon (20 works) · Evolutionary biology (18 works) · Zoology (16 works) · Geography (15 works)