Back Paquicormiformes Catalan Pachycormiformes Spanish ستبرتنهریختان Persian Pachycormiformes Finnish Pachycormiformes French פכיקורמאים HE Pachycormiformes Hungarian Pachycormiformes ID Pachycormiformes Italian Pachycormiformes Dutch
| Pachycormiformes Temporal range: Early Jurassic - Late Cretaceous,
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.JPG)
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| Skeleton of Pachycormus | |
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| Skeleton of Orthocormus | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Infraclass: | Teleosteomorpha |
| Division: | †Aspidorhynchei |
| Order: | †Pachycormiformes Berg 1937 |
| Family: | †Pachycormidae Woodward, 1895 |
| Type genus | |
| Pachycormus Agassiz, 1833
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| Genera | |
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See text | |
| Synonyms[1] | |
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Pachycormiformes is an extinct order of marine ray-finned fish known from the Early Jurassic to the end of the Cretaceous. It only includes a single family, Pachycormidae. They were characterized by having serrated pectoral fins (though more recent studies demonstrated that fin shape diversity in this group was high[2]), reduced pelvic fins and a bony rostrum. Pachycormiformes are morphologically diverse, containing both tuna and swordfish-like carnivorous forms, as well as edentulous suspension-feeding forms.
- ^ van der Laan, R. (2018). "Family-group names of fossil fishes". European Journal of Taxonomy (466). doi:10.5852/ejt.2018.466.
- ^ Liston, Jeff J.; Maltese, Anthony E.; Lambers, Paul H.; Delsate, Dominique; Harcourt-Smith, William E. H.; Heteren, Anneke H. van (2019-11-07). "Scythes, sickles and other blades: defining the diversity of pectoral fin morphotypes in Pachycormiformes". PeerJ. 7: e7675. doi:10.7717/peerj.7675. ISSN 2167-8359. PMC 6842561. PMID 31720097.