†order Echinorhiniformes (shark)

Chondrichthyes - Echinorhiniformes

Parent taxon: Squalimorphi according to J. A. Long 2011

See also Kent 2018 and Underwood 2006

Sister taxa: Hexanchiformes, Pristiphoriformes

Subtaxa: Echinorhinidae

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Ecology: nektonic carnivore

Distribution:

• Pliocene of United States (1: North Carolina collection)

• Miocene of United States (2: California, North Carolina)

• Oligocene to Miocene of Argentina (1)

• Oligocene of United States (1: California)

• Eocene of United States (1: Virginia)

• Cretaceous of Argentina (1), Australia (1), Chile (1)

Total: 9 collections each including a single occurrence

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