†family Megachasmidae (mackerel shark)

Chondrichthyes - Lamniformes - Megachasmidae

Parent taxon: Lamniformes according to K. Shimada et al. 2014

See also Purdy et al. 2001

Sister taxa: Anacoracidae, Archaeolamnidae, Carchariidae, Carchariolamna, Cardabiodontidae, Cetorhinidae, Cretoxyrhinidae, Eoptolamnidae, Hispidaspis, Isurolamna, Lamnidae, Microcorax, Odontaspididae, Otodontidae, Palaeocarcharias, Paranomotodon, Pseudocarcharidae, Pseudocarchariidae

Subtaxa: Megachasma

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Ecology: fast-moving nektonic suspension feeder-carnivore

Distribution:

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

• Miocene of United States (4: California, North Carolina, Oregon)

• Oligocene to Miocene of Peru (1)

• Oligocene of United States (2: California, Oregon)

Total: 9 collections each including a single occurrence

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