Rhombodus

Extinct genus of cartilaginous fishes From Wikipedia, the free encyclopedia

Rhombodus is a prehistoric genus of ray belonging to the family Rhombodontidae.

Phylum:Chordata
Class:Chondrichthyes
Subclass:Elasmobranchii
Order:Myliobatiformes
Quick facts Scientific classification ...
Rhombodus
Temporal range: Cretaceous - Paleocene [1]
Fossil tail spines of Rhombodus meridionalis from Khouribga (Morocco.)
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Order: Myliobatiformes
Family: †Rhombodontidae
Genus: †Rhombodus
Dames, 1881[1]
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Species within this genus lived from the Cretaceous period, Maastrichtian age to the Paleocene epoch, from 70.6 to 55.8 million years ago.[1]

Life reconstruction of Rhombodus binkhorsti

Species

Species within this genus include:[1]

  • Rhombodus andriesi Noubhani and Cappetta 1994
  • Rhombodus binkhorsti Dames, 1881 North America
  • Rhombodus bondoni Arambourg 1952
  • Rhombodus carentonensis Vullo 2005
  • Rhombodus ibericus Kriwet et al. 2007
  • Rhombodus laevis Cappetta and Case 1975
  • Rhombodus meridionalis Arambourg 1952
  • Rhombodus microdon Arambourg 1952

Description

Rhombodus species could reach a length of 75–100 centimetres (30–39 in).[2] This genus is known from its caudal spines and rhombic teeth, which are all that usually fossilises. These rhombic teeth are bilobate, with vertical wrinkles and a width of about 1.5 centimetres (0.59 in).[3]

Distribution

Fossils have been found in the sediments of Africa, Europe, Asia and the Americas.[1]

See also

References

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