Palaeoamasia

Palaeoamasia
Temporal range: Middle Eocene
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Embrithopoda
Family: Palaeoamasiidae
Palaeoamasinae[1]
Genus: Palaeoamasia
Ozansoy 1966
Species: P. kansui
Binomial name
Palaeoamasia kansui
Ozansoy 1966

Palaeoamasia is an extinct genus of embrithopod mammal. The type species, Palaeoamasia kansui (Ozansoy 1966) is represented in Eocene deposits of Central Anatolia. There are two other genera in the family: Hypsamasia and Crivadiatherium.

Palaeoamasia was previously described as the oldest and most primitive of the arsinoitheriid, and, compared to the dentition of other genera in that family, its teeth are lower crowned than those of Arsinoitherium but still bilophodont[Explain 1] and it skull lacked horns. Arsinoithere fossils have all been found in lignites that formed in swamps and lakes, corroborating the interpretation that all related genera were semi-aquatic. Crivadiatherium, a closely related genus, has been found in Romania.[2]

Ozansoy 1966 described the genus, and Ozansoy 1969, Şen & Heintz 1979, and Kaya 1995 have studied it.

Notes

  1. ↑ Two transverse ridges unite the four cusps on the molars
  1. ↑ Palaeoamasidae in the Paleobiology Database. Retrieved March 2013.
  2. ↑ Rose 2006, p. 266

References

  • Kaya, Tümel Tanju (1995). "Paleoamasia kansui (Mammalia) in the Eocene of Bultu-Zile (Tokat-Northeastern Turkey) and systematic revision of Paleoamasia". Turkish Journal of Earth Science (Ankara) 4: 105–11.
  • Ozansoy, Fikret (1966). Türkiye Senozoik çağlarında fosil insan formu problemi ve biostratigrafik dayanakları. A.Ü. D.T.C.F. (University of Ankara, Faculty of Languages, History and Geography Publications) 172. Ankara University Press. pp. 1–104. OCLC 16763756.
  • Ozansoy, Fikret (1969). "Yeni bir Paleoamasia kansui, Boyabat (Sinop) Eosen fosil memeli biozonu ve paleontolojik belgeleri". Turk Tarih Kurumu Belleten (Bulletin of the Turkish Historical Society) 33 (132).
  • Rose, Kenneth David (2006). The beginning of the age of mammals. Baltimore: JHU Press. ISBN 0801884721.
  • Şen, Ş.; Heintz, E. (1979). "Palaeoamasia kansui Ozansoy 1966, embrithopode (Mammalia) de l'Eocene de Anatolie". Annales de paléontologie: Vertébrés 65 (1): 73–91.