Biology:Holoptychiidae

Holoptychiidae; Temporal range: Middle Devonian-Mississippian; ~393.3–318 Ma PreЄ Є O S D C P T J K Pg N
	Holoptychius sp.
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Porolepimorpha
Order:	†Porolepiformes
Family:	†Holoptychiidae; Owen, 1860
Genera
	†Glyptolepis; †Holoptychius (type); †Laccognathus;

Short description: Extinct family of fishes

Holoptychiidae is an extinct family of lobe-finned fishes which lived during the Devonian and Carboniferous periods. At least one genus, Laccognathus, is thought to have been amphibious.^[1]

References

↑ Vorobyeva, E.I. (2006). "A new species of Laccognathus (Porolepiform Crossopterygii) from the Devonian of Latvia". Paleontol. J. (Physorg.com) 40 (3): 312–322. doi:10.1134/S0031030106030129.

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Holoptychiidae Temporal range: Middle Devonian-Mississippian ~393.3–318 Ma PreЄ Є O S D C P T J K Pg N

Holoptychius sp.
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Porolepimorpha
Order:	†Porolepiformes
Family:	†Holoptychiidae Owen, 1860
Genera
†Glyptolepis †Holoptychius (type) †Laccognathus