Pachycormiformes

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Pachycormiformes
Temporal range: Late Triassic - Late Cretaceous, 228–65.5Ma
Hypsocormus2.jpg
Hypsocormus of the Pachycormidae
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
(unranked): Actinopteri
Subclass: Neopterygii
Infraclass: Holostei
Order: Pachycormiformes
Families

Pachycormidae

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.

Protosphyraena perniciosa

Some sources place Ichthyodectidae herein too, but these seem to be somewhat more advanced Teleostei.

Timeline of genera[edit]

Cretaceous Jurassic Triassic Late Cretaceous Early Cretaceous Late Jurassic Middle Jurassic Early Jurassic Late Triassic Middle Triassic Early Triassic Spathiurus Saurocephalus Prymnetes Saurodon Eubiodectes Neopachycormus Ichthyodectes Gillicus Protosphyraena Xiphactinus Koonwarria Wadeichthys Neopholidophoropsis Vinctifer Chirocentrites Mesoclupea Cladocyclus Clupavus Ceramurus Ichthyokentema Pholidophoristion Ascalobos Pachytrissops Austropleuropholis Leptolepides Ligulella Parapleuropholis Pleuropholis Thrissops Allothrissops Orthocormus Ankylophorus Belonostomus Tharsis Eurystichthys Luisiella Hungkiichthys Eugnathides Luisichthys Protoclupea Atacamichthys Bobbichthys Domeykos Varasichthys Hypsocormus Asthenocormus Eurycormus Todiltia Aspidorhynchus Occithrissops Archaeomaene Aetheolepis Aphnelepis Baleiichthys Madariscus Oreochima Leptolepis Sauropsis Pachycormus Euthynotus Prosauropsis Saurostomus Proleptolepis Pholidophoropsis Pholidophoroides Hengnania Pholidophorus Parapholidophorus Pholidoctenus Pholidorhynchodon Seefeldia Pholidolepis Elpistoichthys Flugopterus Pholidophoretes Prohalecites Cretaceous Jurassic Triassic Late Cretaceous Early Cretaceous Late Jurassic Middle Jurassic Early Jurassic Late Triassic Middle Triassic Early Triassic

Sources/external links[edit]