Pachycormiformes
Pachycormiformes is an extinct order of ray-finned fish known from Mesozoic deposits from Eurasia and the Americas. They were characterized by having serrated pectoral fins, reduced pelvic fins and a bony rostrum. Their relations with other fish are unclear.
Some sources place Ichthyodectidae herein too, but these seem to be somewhat more advanced Teleostei.Taxonomy
- Order †Pachycormiformes Berg 1937
- * Family †Archaeomaenidae Boulenger 1904a
- ** Genus †Aetheolepis Woodward 1895 non Warren 1896
- ** Genus †Aphnelepis Woodward 1895
- ** Genus †Archaeomaene Woodward 1895
- ** Genus †Gurvanichthys Jakovlev 1986
- ** Genus †Madariscus Wade 1941
- ** Genus †Oreochima Schaeffer 1972
- ** Genus †Wadeichthys Waldman 1971
- ** Genus †Zaxilepis Su 1994
- * Family †Koonwarriidae Waldman 1971
- ** Genus †Koonwarria Walden 1971
- * Family †Pachycormidae Lydekker 1889
- ** Genus ?†Atacamichthys Arratia & Schultze 1987
- ** Genus ?†Bobbichthys Arratia 1986
- ** Genus ?†Cephenoplosus le Sauvage 1874
- ** Genus ?†Eugnathides Gregory 1923
- ** Genus ?†Haasichthys Delsate 1999
- ** Genus ?†Hengnania Wang 1977
- ** Genus ?†Pholidophoroides Woodward 1941
- ** Genus ?†Pholidophoropsis Nybelin 1966
- ** Genus ?†Prymnetes Cope 1871
- ** Genus ?†Pseudoasthenocormus Lambers 1999
- ** Genus ?†Seefeldia Nybelin 1974
- ** Genus ?†Prosauropsis le Sauvage 1893
- ** Genus ?†Sauropsis Agassiz 1832
- ** Genus ?†Saurostomus Agassiz 1843
- ** Genus †Euthynotus Wagner 1860
- ** Genus †Hypsocormus Wagner 1860
- ** Genus †Orthocormus Weitzel 1930
- ** Genus †Australopachycormus Kear 2007
- ** Genus †Protosphyraena Leidy 1857
- ** Genus †Pachycormus Agassiz 1833 non Coville ex Standley 1923
- ** Genus †Martillichthys Liston 2008
- ** Genus †Asthenocormus Woodward 1895
- ** Genus †Bonnerichthys Friedman et al. 2010
- ** Genus †Leedsichthys Woodward 1889
- ** Genus †Rhinconichthys Friedman et al. 2010
