Topic summary
Holoptychiidae
Extracted from the Wikipedia article Porolepiformes.
Porolepiformes is an order of prehistoriclobe-finned fish which lived during the Devonianperiod (about 416 to 359 million years ago). They are thought to represent the sister group to lungfish (class Dipnoi). The group contains two families: Holoptychiidae and Porolepididae.