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

Paluxysuchus, new crocodyliform from Lower Cretaceous of Texas



From: Ben Creisler
bcreisler@gmail.com

A paper in the new JVP:

Thomas L. Adams (2013)
A new neosuchian crocodyliform from the Lower Cretaceous (late Aptian)
Twin Mountains Formation of North-Central Texas.
Journal of Vertebrate Paleontology 33(1): 85-101
DOI:10.1080/02724634.2012.713277
http://www.tandfonline.com/doi/full/10.1080/02724634.2012.713277


A new fossil crocodyliform, Paluxysuchus newmani, gen. et sp. nov., is
established on the basis of a nearly complete skull from the Lower
Cretaceous (late Aptian) Twin Mountains Formation of north-central
Texas. Partially articulated and disarticulated cranial material
representing two individuals was recovered from the Jones Ranch
locality in close association with the sauropod Paluxysaurus jonesi.
The holotype skull is nearly complete, missing the premaxillae, left
palatine, and pterygoids, and does not preserve the choanal region.
This taxon is notable for having its frontal separated medially from
the orbital margin, an extremely elongate anterolateral process of the
postorbital, large and rounded supratemporal fenestrae, and a narrow,
rod-like posterior ramus of the jugal. These features indicate
affinities with goniopholidids, pholidosaurids, and thalattosuchians.
A phylogenetic analysis places Paluxysuchus newmani deep within
Neosuchia as the sister taxon to the clade that includes
Goniopholididae and Eusuchia.