Additions to the Selachian fauna of the Russian Cretaceous. I. A new species of Protosqualus Cappetta, 1977 (Chondrichthyes: Squalidae)
A.O. Averianov
Abstract. Protosqualus glickmani sp. n. from the Lower Cenomanian deposits near Sinenkie village in Saratov Prov., Russia is described. It differs from the two previously known species of the genus in the wider cusp, more parallel edges of the apron, right angle between the planes of crown and root, and larger size.
Zoosystematica Rossica, 1996, 5(2): 319–320 ▪ Published in print 15 May 1997
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References
Cappetta, H. 1977. Sélaciens nouveaux de l'Albien supérieur de Wissant (Pas-de-Calais). Geobios, 10(6): 967-973. https://doi.org/10.1016/S0016-6995(77)80085-5
Cappetta, H. 1987. Mesozoic and Cenozoic Elasmobranchii. In: Schultze, H.-P. (ed.). Handbook of Paleoichthyology, Chondrichthyes II, 3B. 193 p. Stuttgart & New York.
Dalinkevičtus, I.A. 1935. On the fossil fishes of the Lithuanian Chalk. I. Selachii. Mem. Fac. Sci. Univ. Kaunas, 9: 1-63.
Glickman, L.S. 1964. Akuly paleogena i ikh stratigraficheskoe znachenie [Paleogene sharks and their stratigraphic significance]. 229 p. Moscow & Leningrad. (In Russian).
Glickman, L.S. 1980. Evolyutsiya melovykh i kainozoiskikh lamnoidnykh akul [Evolution of Cretaceous and Cenozoic lamnoid sharks]. 248 p. Moscow. (In Russian).
Thies, D. 1981. Vier neue Neoselachier-Haiarten aus der NW-deutschen Unterkreide. N. Jb. Geol. Palaeont. Mh., 8: 475-486.