Acrotemnus
Temporal range:
Turonian,
Acrotemnus holotype
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Pycnodontiformes
Family: Pycnodontidae
Genus: Acrotemnus
Agassiz, 1836
Type species
Acrotemnus faba
Species
  • Acrotemnus faba
    Agassiz, 1836
  • Acrotmenus streckeri
    Shimada, Portillo, and Cronin, 2021
  • Acrotmenus megafrendodon
    Shimada, Portillo, and Cronin, 2021
Synonyms

Acrotemnus is an extinct genus of pycnodontid ray-finned fish from various areas of the Tethys Sea that lived during the Turonian stage of the Upper Cretaceous. The genus comprises three species A. faba,[1] A. streckeri, and A. megafrendodon.[2]

Description

Acrotemnus was initially known from just the type species A. faba described by Louis Agassiz in 1843 from specimens collected in Niger.[1] However, Shimada, Portillo, and Cronin, 2021 described the specimen TxVP 43056-3 as Acrotemnus cf. A. streckeri lumping the whole genus Macropycnodon into Acrotemnus.[2]

Classification

In its description, Agassiz, 1836 recovers it as a pycnodontid.[1] Shimada, Portillo, and Cronin, 2021 retain this placement in their redescription of A. streckeri, and A. megafrendodon.[2]

See also

References

  1. 1 2 3 L. Agassiz. 1836. Recherches Sur Les Poissons Fossiles. Tome I (livr. 18). Imprimerie de Petitpierre, Neuchatel
  2. 1 2 3 Shimada, Kenshu; Portillo, Dianne; Cronin, Timothy (August 2021). "A new pycnodont specimen (Actinopterygii: Pycnodontiformes) from the Upper Cretaceous of Big Bend National Park, Texas, USA, confirming the bony fish genus Macropycnodon as a junior synonym of Acrotemnus". Cretaceous Research. 124. doi:10.1016/j.cretres.2021.104797. S2CID 233924239. Retrieved 1 December 2023.


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