''Comobatrachus'' (meaning " Como Bluff frog") is a dubious genus of

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

frog known only from the holotype, YPM 1863, part of the right humerus, found in Reed's Quarry 9 near Como Bluff, Wyoming in the Late Jurassic-aged

Morrison Formation The Morrison Formation is a distinctive sequence of Late Jurassic, Upper Jurassic sedimentary rock found in the western United States which has been the most fertile source of dinosaur fossils in North America. It is composed of mudstone, sandsto ...

.Foster, J. (2007). "Anura (Frogs)." pp. 135-136. The holotype was commented on but not described by Moodie in 1912, although it was probably discovered alongside the holotype of ''

Eobatrachus ''Eobatrachus'' is a dubious genus of extinct frog known only from the holotype, YPM 1862, part of the right humerus, found in Reed's Quarry 9 near Como Bluff, Wyoming in the Late Jurassic-aged Morrison Formation.Foster, J. (2007). "Anura ...

'', but was not described by Othniel Charles Marsh when he named ''

'' in 1887. The type, and only species, ''C. aenigmatis'', was named and described in 1960.Hecht, M. K. and Estes, R. (1960). Fossil amphibians from Quarry Nine. ''Postilla'' 46:1-19 It was probably related to the contemporaneous ''

''. Evans, S. E. and Milner, A. R. (1993). Frogs and salamanders from the Upper Jurassic Morrison Formation (Quarry Nine, Como Bluff) of North America. ''Journal of Vertebrate Paleontology'' 13(1):24-30

References

Mesozoic frogs Morrison fauna Nomina dubia Fossil taxa described in 1960 {{jurassic-animal-stub