Semionotus Agassiz 1843 (ray-finned fish)

Actinopteri - Semionotiformes - Semionotidae

Synonym: Ischypterus Egerton 1847

Full reference: L. Agassiz. 1843. Recherches Sur Les Poissons Fossiles. Tome I (livr. 18). Imprimerie de Petitpierre, Neuchatel xxxii-188

Parent taxon: Semionotidae according to A. López-Arbarello 2012

See also Beltan 1972, Haughton 1924, Hay 1902, McCune 1986, Schaeffer 1967, Schaeffer and Dunkle 1950, Sepkoski 2002, Woodward 1890 and Woodward 1895

Sister taxa: Acentrophorus, Aetheolepis, Aphnelepis, Archaeolepidotus, Hemicalypterus, Pristisomus, Sargodon, Semionotus serratus, Tetragonolepis, Tianfuichthys

Subtaxa: Palaeoniscus agassizii Semionotus agassizii Semionotus alatus Semionotus australis Semionotus bergeri Semionotus braunii Semionotus capensis Semionotus elegans Semionotus formosus Semionotus fultus Semionotus gibbus Semionotus gigas Semionotus kanabensis Semionotus kapffi Semionotus lenticularis Semionotus leptocephalus Semionotus lineatus Semionotus marshii Semionotus metcalfi Semionotus micropterus Semionotus minutus Semionotus modestus Semionotus nilsonni Semionotus normanniae Semionotus ovatus Semionotus parvus Semionotus robustus Semionotus tenuiceps Semionotus tenuis Semionotus trotti

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Type: Semionotus bergeri

Ecology: nektonic durophage-carnivore

Distribution:

• Cretaceous of United States (1: Utah collection)

• Jurassic of Canada (1: Nova Scotia), United States (5: Connecticut, New Jersey)

• Triassic to Jurassic of France (1), United States (2: Utah)

• Triassic of Australia (2), France (1), Germany (2), Malaysia (1), Spain (2), Svalbard and Jan Mayen (1), the United Kingdom (1), United States (18: Arizona, Colorado, New Jersey, New Mexico, North Carolina, Texas, Utah)

Total: 38 collections including 45 occurrences

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