Enhydrictis

Enhydrictis is a genus of extinct mustelids. The type species, and best known, is Enhydrictis galictoides from the Pleistocene of Sardinia.

Enhydrictis
Temporal range: Early - Late Pleistocene
Fossil of Enhydrictis galictoides
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Mustelidae
Subfamily: Ictonychinae
Genus: Enhydrictis
Forsyth-Major, 1902[1]
Type species
Enhydrictis galictoides

Taxonomy

The exact number of species of Enhydrictis has been a matter of debate. It is believed to have evolved from a related genus from mainland Europe known as Pannonictis.[2] One species, P. Pilgrimi has been classified as a belonging to Enhydictis (as Enydrictis ardea), although this is unlikely.[3][4] A 2019 study also suggests that the genus Oriensictis of Asia should be considered a synonym of Enhydrictis as well.[5] In 2016, a new species from Algeria was described. Known as Enhydrictis hoffstetteri, it is the first member of the genus known from Africa.[6] Other scholars have considered the attribution of this species to Enhydrictis doubtful, and that the species should be placed in Pannonictis instead.[7][8] In 2018 a new species, Enhydrictis praegalictoides was described from Middle Pleistocene aged sites on Sardinia, which is likely ancestral to E. galictoides.[7]

Enhydrictis and its relatives are classified as belonging to the subfamily Galictinae.[8] and to the tribe Galctini, the only extant genera of which, Galictis and Lyncodon, are endemic to Central and South America.[7]

Description

Enhydrictis galictoides was a fairly large, robust terrestrial mustelid.[9] When first described, it was considered to be an otter-like species adapted to an aquatic lifestyle, but studies on the limb bones do not support such claims.[10]

During the Pleistocene, Sardinia was home to several other mustelids, such as the otters Megalenhydris and Sardolutra.

References

  1. "Enhydrictis". GBIF.
  2. Rook, L. (January 1995). "Pannonictis nestii (Carnivora, Mammalia) from the late Villafranchian of Pietrafitta (Umbria, Italy). Preliminary note". {{cite journal}}: Cite journal requires |journal= (help)
  3. Kurten, Bjorn (2007). Pleistocene Mammals of Europe. AldineTransaction. p. 97. ISBN 9780202309538.
  4. Colombero, S.; Pavia, M.; Rook, L. (September 2012). "Pannonictis nestii (Galictinae, Mustelidae), a new element in the vertebrate association of the human site of Pirro Nord (Italy, Early Pleistocene)". Geodiversitas. 34 (3): 665–681. doi:10.5252/g2012n3a11. hdl:2318/126812. S2CID 55597076.
  5. Quigao, J. (April 2019). "Discovery of Enhydrictis (Mustelidae, Carnivora, Mammalia) cranium in Puwan, Dalian, Northeast China demonstrates repeated intracontinental migration during the Pleistocene". Quaternary International. 513: 18–29. Bibcode:2019QuInt.513...18J. doi:10.1016/j.quaint.2019.01.024.
  6. Geraads, D. (2016). "Pleistocene Carnivora (Mammalia) from Tighennif (Ternifine), Algeria" (PDF). Geobios. 49 (6): 445–458. doi:10.1016/j.geobios.2016.09.001.
  7. Rook, Lorenzo; Bartolini Lucenti, Saverio; Tuveri, Caterinella; Arca, Marisa (October 2018). "Mustelids (Carnivora, Mammalia) from Monte Tuttavista fissure fillings (Early and Middle Pleistocene; Orosei, Sardinia): Taxonomy and evolution of the insular Sardinian Galictini". Quaternary Science Reviews. 197: 209–223. doi:10.1016/j.quascirev.2018.08.022.
  8. Lucenti, S. (2018). "Revising the species "Mustela" ardea Gervais, 1848–1852 (Mammalia, Mustelidae): Martellictis gen. nov. and the systematics of the fossil "Galictinae" of Eurasia". Comptes Rendus Palevol. 17 (8): 522–535. doi:10.1016/j.crpv.2018.02.003.
  9. van der Geer, Alexandra; Lyras, George; de Vos, John (2011). Evolution of Island Mammals: Adaptation and Extinction of Placental Mammals on Islands. Wiley. p. 129. ISBN 9781119675747.
  10. Bate, Dorothea M. A. (July 1935). "17. Note on the Habits of Enhydrictis galictoides, with Description of some Limb-bones of this Mustelid from the Pleistocene of Sardinia". Proceedings of the Zoological Society of London. 105 (2): 241–245. doi:10.1111/j.1469-7998.1935.tb06247.x.
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