Lissodus
Temporal range:
Teeth
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Order: †Hybodontiformes
Family: †Lonchidiidae
Genus: †Lissodus
Brough, 1935
Species

Lissodus hasleensis Rees, 1998

Lissodus is an extinct genus of hybodont. While fossils attributed to this genus are known spanning from the latest Devonian (Famennian) to the very end of the Cretaceous (Maastrichtian),[1] others consider the genus to have a more narrow range, spanning from the Early Triassic to the end of the Early Cretaceous (Albian).[2] Lissodus is often placed in the family Lonchidiidae, though other authors consider it incertae sedis within Hybodontiformes. Lonchidion has often been regarded as synonymous, but many recent authors consider it to be a distinct but closely related genus.[2] Preserved skull and postcranial remains are known for the Early Triassic species L. cassangensis and L. africanus from Angola and South Africa respectively.[2] Lissodus sensu lato (including Lonchidion) has been estimated to have had a body size range of 15–50 centimetres (0.49–1.64 ft).[1] Remains of Lissodus sensu lato have been found worldwide in both marine and freshwater environments.[1] The low crowned teeth suggest that Lissodus was a bottom dweller that fed by crushing hard shelled organisms (durophagy).[1]

Species

Known species:[3]

  • Lissodus africanus
  • Lissodus angulatus
  • Lissodus bartheli
  • Lissodus cassangensis
  • Lissodus cristatus
  • Lissodus guenneguesi
  • Lissodus hasleensis
  • Lissodus johnsonorum
  • Lissodus leiodus
  • Lissodus leiopleurus
  • Lissodus lepagei
  • Lissodus levis
  • Lissodus minimus
  • Lissodus wardi
  • Lissodus xiushuiensis

References

  1. 1 2 3 4 J. Fischer Brief synopsis of the hybodont form taxon Lissodus Brough, 1935, with remarks on the environment and associated fauna Freiberger Forschungshefte Serie C, 528 (2008), pp. 1-23
  2. 1 2 3 Jan Rees & Charlie J. Underwood (2002). "The status of the shark genus Lissodus Brough, 1935, and the position of nominal Lissodus species within the Hybodontoidea (Selachii)" (PDF). Journal of Vertebrate Paleontology. 22 (3): 471–479. doi:10.1671/0272-4634(2002)022[0471:tsotsg]2.0.co;2. JSTOR 4524243. S2CID 13836075.
  3. ↑ "PBDB". paleobiodb.org. Retrieved 2023-01-28.


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