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Temporal range: Late Triassic - Late Cretaceous, 228–65.5 Ma
Hypsocormus of the Pachycormidae
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Division: Aspidorhynchei
Order: Pachycormiformes
Protosphyraena perniciosa

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.


Sources/external links[edit]


  1. ^ Haaramo, Mikko (2007). "†Pachycormiformes". Mikko's Phylogeny Archive. Retrieved 30 December 2016. 
  2. ^ Nelson, Joseph S.; Grande, Terry C.; Wilson, Mark V. H. (2016). Fishes of the World (5th ed.). John Wiley & Sons. ISBN 9781118342336. 
  3. ^ van der Laan, Richard (2016). "Family-group names of fossil fishes".