Pachycormidae

Pachycormidae; Temporal range: Late Triassic to Late Cretaceous
	Size chart of notable genera
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	†Pachycormiformes
Family:	†Pachycormidae; Woodward, 1895
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

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

Pachycormus
Leedsichthys

Sources/external links

References

↑ 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.

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[Friedman-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.