Fig. 48 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. 48. Area cladogram derived from phylogeny (fig. 43) of stingrays (Myliobatiformes) presented in this paper (see Biogeographical Implications for discussion). The sequence of branches (mostly family­level terminal taxa) from left to right is as follows: Hexatrygonidae, †Asterotrygon, Plesiobatidae, Urolophidae, Urotrygonidae, †Heliobatis, Potamotrygonidae, Dasyatidae, Gymnuridae, Myliobatidae. Asterisks (*) indicate phylogenetic position and distribution of Green River stingrays. M = marine; FW = freshwater; B = brackish water.