98 CRETACEOUS AND TERTIARY FISH. 



Fig. 51. — Myliobatis pachyrhizodus Fowler. (Type.) 



Known from the above-described dental plate, unfortunately 

 imperfect. This species is distinguished by its very thick root. 



Formation and locality. — Specimen No. 6660, type, in the col- 

 lection of the Geological Survey of New Jersey, and is from the 

 upper marl [Manasquan, K.] at Poplar. 



(Pachyrhizodus, i. e., thick-rooted tooth.) 



Genus AETOBATUS Blainville. 



Aetobatus Blainville, Bull. Soc. Philomath. Paris, 1816, p. 112. Type Raja 



narinari Euphrasen, tenth species, virtually restricted by Gill, Proc. U. 



S. Nat. Mus., 1894, p. 112. 

 Mtobatis, AJtobatus, Aetobatis, Aetobates, auct. 

 Goniobatis Agassiz, Proc. Boston Soc. N. H., VI, 1839, p. 385. Type Raja 



flagellum Schneider, monotypic. 

 Stoasodoii Cantor, Journ. Asiat. Soc. Bengal (Cat. Malay. Fish.), 1849, p. 



434. Type Raja narinari Euphrasen, monotypic, and name based on 



^tobatis Miiller and Henle=Blainville. 



