[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Oohkotokia, new ankylosaurid from the Late Cretaceous from Montana



From: Ben Creisler
bcreisler@gmail.com


A new advance online paper:

Paul Penkalski (2013)
A new ankylosaurid from the late Cretaceous Two Medicine Formation of
Montana, USA.
Acta Palaeontologica Polonica (in press)
doi: http://dx.doi.org/10.4202/app.2012.0125
http://app.pan.pl/article/item/app20120125.html



Oohkotokia horneri gen. et sp. nov. is described based on a specimen
in the collections of the Museum of the Rockies, Montana, USA.
Oohkotokia exhibits a unique combination of characters not seen in
other late Campanian North American ankylosaurids: prominent,
horn-like, trihedral squamosal bosses, a small, undistinguished median
nasal plate on the dorsal surface of the rostrum, a relatively small
occipital condyle, a smooth osteoderm external texture, and triangular
lateral osteoderms. Other specimens from the Two Medicine Formation
are referable to Oohkotokia. O. horneri, Euoplocephalus tutus,
Dyoplosaurus acutosquameus, and Scolosaurus cutleri separate
stratigraphically.