Fig. 26 in Freshwater Stingrays Of The Green River Formation Of Wyoming (Early Eocene), With The Description Of A New Genus And Species And An Analysis Of Its Phylogenetic Relationships (Chondrichthyes: Myliobatiformes)

Fig. 26. Posterior tail region and caudal stings of specimens of †Asterotrygon, n. gen. (A, C, and D) and †Heliobatis (B). Note individual vertebrae continuing posteriorly beyond caudal stings to distal extremity of tail. A. FMNH PF 14097 (entire specimen in fig. 9). B. AMNH P 19665 (specimen in fig. 28). C. FMNH PF 12914 (reversed; specimen in fig. 6). D. FMNH PF 14098 (reversed; specimen in fig. 8). Anterior to bottom.