Hindlimb adaptations in Ourayia and Chipetaia, relatively large-bodied omomyine primates from the Middle Eocene of Utah

American Journal of Physical Anthropology
Rachel H DunnD T Rasmussen

Abstract

North American omomyids represent a tremendous Eocene radiation of primates exhibiting a wide range of body sizes and dietary patterns. Despite this adaptive diversity, relatively little is known of the postcranial specializations of the group. Here we describe hindlimb and foot bones of Ourayia uintensis and Chipetaia lamporea that were recovered from the Uinta B member (early Uintan Land Mammal Age), Uinta Formation, Utah. These specimens provide insights into the evolution of postcranial adaptations across different body sizes and dietary guilds within the Eocene primate radiation. Body mass estimates based on talar measurements indicate that Ourayia uintensis and Chipetaia lamporea weighed about 1,500-2,000 g and 500-700 g, respectively. Skeletal elements recovered for Ourayia include the talus, navicular, entocuneiform, first metatarsal, and proximal tibia; bones of Chipetaia include the talus, navicular, entocuneiform, and proximal femur. Both genera had opposable grasping big toes, as indicated by the saddle-shaped joint between the entocuneiform and first metatarsal. Both taxa were arboreal leapers, as indicated by a consistent assemblage of characters in all represented bones, most notably the somewhat elongated navicu...Continue Reading

References

Jan 1, 1978·Folia primatologica; international journal of primatology·D E Savage, B T Waters
Mar 1, 1990·American Journal of Physical Anthropology·H H Covert
Jun 1, 1997·Journal of Human Evolution·R J Smith, W L Jungers
May 22, 1998·Folia primatologica; international journal of primatology·D T Rasmussen, K A Nekaris
Dec 9, 1998·Proceedings of the National Academy of Sciences of the United States of America·D T RasmussenE L Simons
Oct 24, 2002·Journal of Human Evolution·Kathleen M Muldoon, Gregg F Gunnell
Nov 13, 2004·American Journal of Primatology·Jessica L White, Daniel L Gebo

❮ Previous
Next ❯

Citations

Nov 13, 2014·American Journal of Physical Anthropology·Daniel L GeboThierry Smith
Nov 13, 2008·American Journal of Physical Anthropology·F Ankel-Simons, D T Rasmussen
Aug 16, 2011·American Journal of Physical Anthropology·Kenneth D RoseJonathan I Bloch
Dec 10, 2013·American Journal of Physical Anthropology·Katrina E JonesJonathan M G Perry
Sep 7, 2017·Journal of Human Evolution·Doug M BoyerMarc Godinot
Jun 19, 2012·Journal of Human Evolution·Daniel L GeboMarian Dagosto
Jun 25, 2018·Journal of Human Evolution·Doug M BoyerJonathan I Bloch

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.