Brownstein—On the theropods of the Ellisdale Site (Campanian) 92(6):1115–1129
America and Ellisdale, especially among the maniraptoran taxa, support the hypothesis that faunal provincialism existed on Appalachia (e.g., Schwimmer, 2016).
Conclusions
The Ellisdale theropod fauna includes tyrannosauroids repre- sented by at least two tooth morphotypes, small and large dro- maeosaurids, ornithomimosaurs, and indeterminate theropods, and is distinct from Campanian western North American ther- opod faunas, much more so resembling mid-Cretaceous ther- opod faunas from western North America and thus supporting the hypothesis that Appalachia was a refugium for relict dino- saur clades. Furthermore, the distinction of the Ellisdale assemblage from southeastern North American theropod faunas may support the presence of dinosaur provinces on Appalachia, a biogeographic phenomenon seen in Laramidian vertebrates.
Acknowledgments
I thank D. Parris for allowing me to access the collections of the NJSM and R. Denton for providing information on the Ellisdale site and for our discussions on Appalachian faunas generally.
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