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Tylosaur from Mexico (free pdf)



From: Ben Creisler
bcreisler@gmail.com


A paper from a few months ago that has not been mentioned yet. The pdf is free.


Abelaid Loera Flores (2013)
Occurrence of a tylosaurine mosasaur (Mosasauridae; Russellosaurina)
from the Turonian of Chihuahua State, Mexico.
Boletín de la Sociedad Geológica Mexicana 65(1): 99-107
http://boletinsgm.igeolcu.unam.mx/bsgm/vols/epoca04/6501/(8)Loera%20Flores.pdf

A new mosasaur specimen was discovered in the Ojinaga Formation
(Turonian) in Chihuahua, Mexico. It is described here based on an
incomplete, slightly deformed skull. Comparative analysis reveals
features from the parafamily Russellosaurinae, especially the genus
Tylosaurus. Some features as the “V” shaped skull, well developed
rostral process, 12 to 13 dentary and maxillary teeth, shape of
premaxilla-maxilla suture, and similar proportions of mandible and
quadrate bone are characteristics of Tylosaurus, and are similar to T.
proriger and T. nepaeolicus, but the absence of an infrastapedial
process indicates it is most closely related to T. kansasensis.