Parasquatina was erected by Herman (1982) for a tooth-design (Maastrichtian, Germany) with a Squatina-like crown but a root sharing characteristics of squatiniforms and orectolobiforms. Lacking associated skeletal material; there is currently no means to be certain in its ordinal placement. Parasquatina had only been reported from the Late Cretaceous of Western Europe; however, Bourdon et al (2011) included as ?Parasquatina sp., a similar tooth-design from the Point Lookout Fm. (Santonian) of New Mexico.

These small (1.5 mm) teeth have a narrow, lingually-directed cusp that extends basally as an apron and slightly overhangs the root. The crown is smooth, cutting edge complete and the shoulders elongate. The hemiaulacorhizous root is broad and low with V-shaped lobes; the central foramen opens on the face of the lingual protuberance. A marginolingual foramen is present midway up the root face.

Selected References

Bourdon, J., Wright, K., Lucas, S.G., Spielmann, J.A. and Pence, R., 2011. Selachians from the Upper Cretaceous (Santonian) Hosta Tongue of the Point Lookout Sandstone, central New Mexico. New Mex. Mus. Nat. His. and Sc., Bulletin 52; 54pp.
Herman, J., 1982. Die Selachier-Zhne aus der Maastricht-Stufe von Hemmoor, Niederelbe (NWDeutchland): Geologie Jahrbuch, v. 61, p. 129-159.