Rhacolepis

Rhacolepis
Temporal range: Aptian
~
Rhacolepis buccalis
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: †Crossognathiformes
Family: †Pachyrhizodontidae
Genus: †
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[1] from the Cretaceous Santana Formation of Brazil.[2] Complete fossilised hearts from this species have been recovered.[3]

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


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