Project 3377: J. G. Napoli, T. Hunt, G. M. Erickson, M. A. Norell. 2019. Psittacosaurus amitabha, a New Species of Ceratopsian Dinosaur from the Ondai Sayr Locality, Central Mongolia. American Museum Novitates. 2019 (3932):1.
Abstract
Psittacosaurus is the most speciose nonavian dinosaur genus, represented by at least 10 (and possibly as many as 19) species uncovered over a wide geographic range. Here, we report a new species of large-bodied Psittacosaurus from the Ondai Sayr locality in central Mongolia, which has hitherto produced only one other Psittacosaurus specimen. This new species is characterized by: (1) an elongate snout, with a gently inclined rostronasal margin, (2) a cranium dorsally convex rather than flat, (3) a subtemporal length less than 40% of total skull length, (4) a maxillary lamina that cups the posterior toothrow, (5) five premaxillary foramina arrayed in an arc, (6) an antorbital fossa as long as it is wide, and (7) a palpebral with a well-developed posterior tonguelike process. Psittacosaurus amitabha is resolved as the most basal member of the genus Psittacosaurus in our phylogenetic analysis. This taxon expands our knowledge of the already-speciose genus Psittacosaurus as well as our understanding of the Ondai Sayr fauna, which is poorly known in comparison to other Mongolian Early Cretaceous localities.Read the article »
Article DOI: 10.1206/3932.1
Project DOI: 10.7934/P3377, http://dx.doi.org/10.7934/P3377
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- Creation Date:
03 February 2019 - Publication Date:
23 August 2019 - Project views: 8844
- Media downloads: 3
Authors' Institutions
- Florida State University
- American Museum of Natural History
- Richard Gilder Graduate School
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James Napoli Project Administrator | 1 | 1 | 1 | 0 |
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Bibliography | 532 | |
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Total downloads from project | 190 | |
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