Alopias subexigua

Alopias subexigua Temporal range: Eocene–Miocene PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Division:	Selachii
Order:	Lamniformes
Family:	Alopiidae
Genus:	Alopias
Species:	A. subexigua
Binomial name
Alopias subexigua Darteville & Casier, 1959

Alopias subexigua is an extinct species of thresher shark, that lived in the Eocene to Miocene. It is known only from teeth. Alopias subexigua was discovered in North America, in California, ^[1] Asia, ^[2] Portugal,^{[ citation needed ]} and Africa. ^[3]

Classification

The classification of A. subexigua are in debate, also is the case of most sharks. A. subexigua is a related species to the extinct Small or Modest Thresher shark (Alopias exigua),^{[ citation needed ]} that your fossils are very similar to genus Isurus.^{[ citation needed ]}A. subexigua is placed in Alopiidae family.

References

1. Guinot, G., Condamine (2019). "Climate cooling and clade competition likely drove the decline of lamniform sharks". Proceedings of the National Academy of Sciences of the United States of America. 116 (41): 20584–20590. doi: 10.1073/pnas.1902693116 . PMC   6789557 . PMID   31548392.
2. Nazzal, I., Mustafa, H.A (2005). "Review of the Middle Eocene (Lutetian) selachian fauna of Jebal eth Thuleithuwat, east Jordan". Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen.{{cite web}}: Missing or empty |url= (help)
3. Casier, E., Dartevelle, E. (1959). "Les poissons fossiles du Bas-Congo et des régions voisines". Sér. A (Minéralogie Géologie, Paléontologie). Annales du Musée du Congo Belge.{{cite web}}: Missing or empty |url= (help)