Evolutionary Biology of the Anurans: Contemporary Research by James L. Vial

By James L. Vial

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Hecht and Ruibal ( 1958) reviewed Stipanicic and Reig ( 1955), and Eaton (1959), Hecht ( 1963), Griffiths (1963) and Casamiquela (196%) have all discussed various features of the species. Reig (1957, 1955) had placed Notobatrachus in a new family Notobatrachidae, a taxon formally accepted by Casamiquela (1961a, 1965b) and Kuhn ( 1961, 1962), and not directly contradicted by any authors other than Griffiths (1963), who referred it to the Ascaphidae. We have reinterpreted a number of character states present in Notobatrachus.

Urostyle; moreover it possesses two cranial articulation surfaces for . . " As the other vertebrae are procoelous the eighth is presumed to be amphicoelous. It is difficult to interpret this situation, for Seiffert does not picture the area in adequate detail. Even if diplasiocoely were confirmed, little else would support a ranid relationship. In our view, Neusibatrachils is a definitive palaeobatrachid with, as described, no clear indication of relationship to other families. There is some evidence that palaeobatrachids were present in North America.

D. Heyler. Piveteau characterized Triadobatrachus as like frogs in three fundamental character states: (1) large frontoparietal, ( 2 ) anteriorly-elongate ilium, and (3) elongation of the proximal tarsals. Of the other frog-like character states that he cited, we consider only the following significant, either because of reinterpretation by Hecht or ourselves, or because they are difEcult or impossible to determine in the specimen. These other character states are ( 4 ) sphenethmoid ossified only anteriorly, (5) large, frog-like parasphenoid, ( 6 ) shortened presacral column, and (7) short tail.

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