Ischyrhiza Leidy 1856 (cartilaginous fish)

Chondrichthyes - Sclerorhynchiformes - Sclerorhynchidae

Alternative spelling: Onchosaurus (Ischyrhiza)

Parent taxon: Sclerorhynchidae according to L. A. Nessov 1997

See also Arambourg 1940, Bryant 1989, Cappetta 1987, Case 1978, Case 1979, Case and Schwimmer 1988, Estes 1964, Estes and Berberian 1970, Hay 1902, Herman 1975, Leidy 1860, Miller 1967, Pearson et al. 2002, Peng et al. 2001, Sepkoski 2002, Storer and Johnson 1974, Suarez and Cappetta 2004, Thurmond and Jones 1981 and Uyeno and Hasegawa 1986

Sister taxa: Ankistrorhynchus, Baharipristis, Biropristis, Borodinopristis, Celtipristis, Ctenopristis, Ganopristis, Kiestus, Libanopristis, Marckgrafia, Micropristis, Onchosaurus, Plicatopristis, Pucapristis, Renpetia, Schizorhiza, Schizorhizinae, Sclerorhynchus

Subtaxa: Ischyrhiza antiqua Ischyrhiza avonicola Ischyrhiza chilensis Ischyrhiza germaniae Ischyrhiza hartenbergeri Ischyrhiza iwakiensis Ischyrhiza mira Ischyrhiza nigeriensis Ischyrhiza serra Ischyrhiza viaudi Onchosaurus (Ischyrhiza) marrocanus

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Type: Ischyrhiza mira

Ecology: nektonic carnivore

Distribution:

• Paleocene of United States (2: Montana, New Jersey collections)

• Cretaceous to Paleogene of United States (1: New Jersey)

• Cretaceous of Bolivia (1), Canada (8: Alberta), Chile (7), Japan (1), Mexico (1), Niger (1), Peru (1), United States (73: Alabama, Colorado, Delaware, Georgia, Kansas, Maryland, Mississippi, Montana, New Jersey, New Mexico, North Carolina, North Dakota, South Carolina, Tennessee, Texas, Utah, Wyoming), Uzbekistan (2)

Total: 98 collections including 119 occurrences

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