Squatirhina is a genus of rajiforms that lived in Late Cretaceous, whose fossils have been found in the Aguja and Pen Formations of Big Bend National Park, Texas, USA.
See also List of prehistoric cartilaginous fish
Footnotes
References Hunt, ReBecca K., Vincent L. Santucci and Jason Kenworthy. 2006. "A preliminary inventory of fossil fish from National Park Service units." in S.G. Lucas, J.A. Spielmann, P.M. Hester, J.P. Kenworthy, and V.L. Santucci (ed.s), Fossils from Federal Lands. New Mexico Museum of Natural History and Science Bulletin 34, pp. 63–69.