Extinct order of fishes
Menaspiformes are an extinct order of holocephalans known from the Carboniferous and Permian periods,[1] with a possible member, Listracanthus,[2] known from the Early Triassic. Members of the order are believed to be durophagous benthic carnivores.[1][3] While historically menaspiforms were classified under Chimaeriformes,[2] they are today recognized as a separate order.[3]
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