Journal
ACTA PALAEONTOLOGICA POLONICA
Volume 61, Issue 1, Pages 159-173Publisher
INST PALEOBIOLOGII PAN
DOI: 10.4202/app.00129.2014
Keywords
Dinosauria; Oviraptorosauria; Caenagnathidae; Elmisaurinae; Campanian; Maastrichtian; Canada; Saskatchewan; USA; Montana
Categories
Funding
- NSERC [203091-2011]
- Alberta Innovates
- Alberta Lottery Fund
- Alberta Historical Resources Foundation
- Dinosaur Research Institute
Ask authors/readers for more resources
New specimens from Canada confirm the presence of elmisaurines in North America and shed light on the relationship of Leptorhynchos elegans to Mongolian forms. These specimens have hindlimb elements previously unknown from elmisaurines in the Dinosaur Park Formation, including tibiae and pedal phalanges. Metatarsal anatomy is sufficiently different to merit a generic distinction from Elmisaurus rarus, and both can be distinguished from Caenagnathus collinsi and Chirostenotes pergracilis. Differences between these taxa include body size, degree of coossification of the tarsometatarsus, and development of cruciate ridges of the metatarsal III. Histological analysis confirms that these differences are not correlated with ontogenetic age of the specimens. The results support the informal separation of caenagnathids based on metatarsal structure, and allow comments on paleobiological differences between caenagnathids and oviraptorids.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available