Ischyrhiza avonicola Estes 1964 (elasmobranch)

Chondrichthyes - Sclerorhynchiformes - Sclerorhynchidae

Full reference: R. Estes. 1964. Fossil vertebrates from the Late Cretaceous Lance Formation, eastern Wyoming. University of California Publications in Geological Sciences 49:1-187

Belongs to Ischyrhiza according to R. Estes 1964

See also Bryant 1989, Cappetta 1987, Case 1978 and Herman 1975

Sister taxa: Ischyrhiza antiqua, Ischyrhiza chilensis, Ischyrhiza germaniae, Ischyrhiza hartenbergeri, Ischyrhiza iwakiensis, Ischyrhiza mira, Ischyrhiza nigeriensis, Ischyrhiza serra, Ischyrhiza viaudi, Onchosaurus (Ischyrhiza) marrocanus

Type specimen: UCMP 53917, a tooth (complete rostral tooth). Its type locality is Lull 2 Quarry (UCMP V-5620), which is in a Maastrichtian terrestrial sandstone in the Lance Formation of Wyoming.

Ecology: nektonic carnivore


• Paleocene of United States (1: Montana collection)

• Cretaceous of United States (25: Colorado, Delaware, Maryland, Montana, New Mexico, North Dakota, South Carolina, Texas, Wyoming)

Total: 26 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.

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