Rhacolepis

Extinct genus of fishes

Rhacolepis
Temporal range: Aptian
~119–113 Ma
PreꞒ
O
S
D
C
P
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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, 1843
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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Teleostei sensu de Pinna, 1996 (= Teleosteomorpha)
Actinopterygii
    • see Actinopterygii
Neopterygii
    • see Neopterygii
Teleostei
    • see below↓
Pachycormidae
Aspidorhynchidae
Pholidophoridae
sensu stricto
Archaeomaenidae
Siyuichthyidae
  • Bogdaichthys
  • Dsungarichthys
  • Manasichthys
  • Siyuichthys
  • Wukangia
Pleuropholidae
Ankylophoridae
Catervariolidae
Teleosts with
cycloid scales
    • see below↓
Otolith taxa
  • Archengraulis
  • Bicavolithus
  • Doggerichthys
  • Sphaeronchus
  • Xenoleptolepis
Leedsichthys problematicus

Aspidorhynchus acutirostris

Ichthyokentema purbeckensis
Leptolepidae
Luisiellidae
Ascalaboidae
Crossognathiformes
Varasichthyidae?
Notelopidae
  • Bavarichthys?
  • Michin?
  • Notelops
  • Nusaviichthys
Crossognathidae
Pachyrhizodontidae
Ichthyodectiformes
Chuhsiungichthyidae
Bardackichthyidae
Cladocyclidae
Ichthyodectidae
Saurodontidae
Crown-Teleostei
    • see below↓
Tharsis dubius

Luisichthys vinalesensis

Xiphactinus audax
Elopomorpha
    • see Elopomorpha
Orthogonikleithridae
Osteoglossomorpha
    • see Osteoglossomorpha
Tselfatiiformes
  • Eoplethodus
Protobramidae
Plethodidae
Clupeocephala
Pentanogmius evolutus
Taxon identifiers
Rhacolepis


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