The osteology of Periptychus carinidens: A robust, ungulate-like placental mammal (Mammalia: Periptychidae) from the Paleocene of North America

PloS One
Sarah L ShelleyStephen L Brusatte

Abstract

Periptychus is the archetypal genus of Periptychidae, a clade of prolific Paleocene 'condylarth' mammals from North America that were among the first placental mammals to radiate after the end-Cretaceous extinction, remarkable for their distinctive dental anatomy. A comprehensive understanding of the anatomy of Periptychus has been hindered by a lack of cranial and postcranial material and only cursory description of existing material. We comprehensively describe the cranial, dental and postcranial anatomy of Periptychus carinidens based on new fossil material from the early Paleocene (Torrejonian) of New Mexico, USA. The cranial anatomy of Periptychus is broadly concurrent with the inferred plesiomorphic eutherian condition, albeit more robust in overall construction. The rostrum is moderately elongate with no constriction, the facial region is broad, and the braincase is small with a well-exposed mastoid on the posterolateral corner and tall sagittal and nuchal crests. The dentition of Periptychus is characterized by strongly crenulated enamel, enlarged upper and lower premolars with a tall centralised paracone/protoconid. The postcranial skeleton of Periptychus is that of a robust, medium-sized (~20 Kg) stout-limbed animal t...Continue Reading

References

Jan 1, 1980·Folia primatologica; international journal of primatology·F S Szalay, M Dagosto
Aug 24, 1999·Transplantation Proceedings·X WangR Andersson
Nov 15, 2005·Science·Scott L WingKatherine H Freeman
Apr 9, 1965·Science·R E Sloan, L Van Valen
Aug 30, 2012·Nature Methods·Caroline A SchneiderKevin W Eliceiri
Feb 9, 2013·Science·Maureen A O'LearyAndrea L Cirranello
May 16, 2013·Chemical Communications : Chem Comm·Shan HeXue Duan
Jan 12, 2017·Biological Reviews of the Cambridge Philosophical Society·Thomas J D HallidayAnjali Goswami
Sep 1, 1966·Evolution; International Journal of Organic Evolution·Leonard B Radinsky
Mar 1, 1968·Evolution; International Journal of Organic Evolution·Frederick S Szalay

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Citations

Oct 6, 2018·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Joe CameronStephen L Brusatte

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