#holocephali
Holocephali
Subclass of cartilagenous fish
Holocephali, sometimes given the name Euchondrocephali, is a subclass of cartilaginous fish in the class Chondrichthyes. The earliest fossils are of teeth and come from the Devonian period. Little is known about these primitive forms, and the only surviving group in the subclass is the order Chimaeriformes.
Fri 19th
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