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Rhacolepis

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Extinct genus of ray-finned fishes

Rhacolepis
Temporal range: Aptian
~119–113 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Rhacolepis buccalis
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: †Crossognathiformes
Family: †Pachyrhizodontidae
Genus: †Rhacolepis
Agassiz, 1841
Type species
Rhacolepis buccalis
Agassiz, 1841
Species
  • R. buccalis Agassiz, 1841
  • R. latus Agassiz, 1841

Rhacolepis is an extinct genus of ray-finned fish from the Cretaceous Santana Formation of Brazil. Complete fossilised hearts from this species have been recovered.

R. buccalis skull
Inside the stomach of a Notelops brama.
R. buccalis with several hundred small shrimp in stomach.
Fossil in Vienna

References

  1. "Rhacolepis". Paleobiology Database. Retrieved 2017-10-13.
  2. Donald B. Brinkman & A. G. Neuman (2002). "Teleost centra from uppermost Judith River Group (Dinosaur Park Formation, Campanian) of Alberta, Canada" (PDF). Journal of Paleontology. 76 (1): 138–155. doi:10.1666/0022-3360(2002)076<0138:TCFUJR>2.0.CO;2. S2CID 130770708.
  3. Maldanis et al. (2016) Heart fossilization is possible and informs the evolution of cardiac outflow tract in vertebrates
Crossognathiformes
Actinopterygii
Neopterygii
Teleostei
Crossognathiformes
    • see below↓
Crossognathiformes
Crossognathiformes
Varasichthyidae?
Crossognathidae
Notelopidae
Pachyrhizodontidae
Pachyrhizodus caninus
Taxon identifiers
Rhacolepis


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