Pachycormidae

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Pachycormidae
Temporal range: Late Triassic to Late Cretaceous
Hypsocormus2.jpg
Hypsocormus
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Pachycormiformes
Family: Pachycormidae
Genera

Asthenocormus
Bonnerichthys
Eugnathides
Euthynotoides
Euthynotus
Hypsocormus
Leedsichthys
Orthocormus
Pachycormus
Prosauropsis
Protosphyraena
Rhinconichthys
Sauropsis
Saurostomus

Pachycormidae is an extinct family 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. Certain members of the group were large filter-feeding planktivores. Their relations with other fish are unclear.

Phylogeny[edit]

Cladogram after Friedman et al. (2010).[1]



Pteronisculus



Discoserra pectinodon






Watsonulus eugnathoides




Macrepistius rostratus




Caturus



Amia calva







Lepisosteus platostomus




Macrosemius rostratus




Semionotus elegans



Lepidotes









Pholidophorus bechei




Elops hawaiensis



Hiodon alosoides




 Pachycormidae 

Euthynotus





Hypsocormus insignis




"Hypsocormus" tenuirostris




Orthocormus




Australopachycormus hurleyi



Protosphyraena








Pachycormus





Asthenocormus titanius



Martillichthys renwickae





Bonnerichthys gladius




Leedsichthys problematicus



Rhinconichthys taylori











Gallery[edit]

Sources/external links[edit]

References[edit]

  1. ^ Matt Friedman, Kenshu Shimada, Larry D. Martin, Michael J. Everhart, Jeff Liston, Anthony Maltese, Michael Triebold (2010). "100-million-year dynasty of giant planktivorous bony fishes in the Mesozoic seas.". Science 327 (5968): 990–993. doi:10.1126/science.1184743. PMID 20167784.