Wyonycteris

Wyonycteris
Temporal range: Thanetian-Ypresian
~58.5–50.3 Ma
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Lipotyphla
Suborder: Soricomorpha
Family: †Nyctitheriidae
Subfamily: †Placentidentinae
Genus: †Wyonycteris
Gingerich 1987[1]
Type species
†Wyonycteris chalix
Species[2]
  • †Wyonycteris chalix Gingerich 1987
  • †Wyonycteris galensis Secord 2008
  • †Wyonycteris kingi Hooker 2018
  • †Wyonycteris microtis Secord 2008
  • †Wyonycteris primitivus Beard and Dawson 2009
  • †Wyonycteris richardi Smith 1995

Wyonycteris is a genus of small mammals that existed in the late Paleocene and early Eocene epochs. The type species is Wyonycteris chalix, which lived in Wyoming during the Clarkforkian North American Land Mammal Age of the Paleocene and was originally proposed to be an early form of insectivorous bat. Later re-examination of the material has put this alliance in doubt, and the genus has instead been proposed as belonging to the subfamily Placentidentinae, within the family Nyctitheriidae.[3] Similar fossil material of the same time period found in Europe was later discovered and described as new species, Wyonycteris richardi.[4]

Secord (2008) described the first known species of Wyonycteris from the Tiffanian NALMA, Wyonycteris galensis and W. microtis,[5] although the status of both species as members of Wyonycteris has been questioned.[3][6] The two largest species, W. primitivus and W. kingi, are known from the early Eocene of Mississippi and England, respectively.[3][7]

  1. ^ P. D. Gingerich. 1987. Early Eocene bats (Mammalia, Chiroptera) and other vertebrates in freshwater limestones of the Willlwood Formation, Clark's Fork Basin, Wyoming. Contributions from the Museum of Paleontology, University of Michigan 27(11):275-320
  2. ^ "Fossilworks: Wyonycteris". fossilworks.org.
  3. ^ a b c Beard, K. Christopher; Dawson, Mary R. (November 2009). "Early Wasatchian Mammals of the Red Hot Local Fauna, Uppermost Tuscahoma Formation, Lauderdale County, Mississippi". Annals of Carnegie Museum. 78 (3): 193–243. doi:10.2992/007.078.0301. S2CID 86281527.
  4. ^ Smith, Thierry. (1995). Présence du genre Wyonycteris (Mammalia, Lipotyphla) à la limite Paléocène-Eocène en Europe. Comptes Rendus de l Académie des Sciences - Series IIA - Earth and Planetary Science. 321. 923-930.
  5. ^ Ross Secord (2008). "The Tiffanian Land-Mammal Age (Middle and Late Paleocene) In The Northern Bighorn Basin, Wyoming". Papers on Paleontology. No. 35. hdl:2027.42/61362.
  6. ^ Manz, Carly L.; Bloch, Jonathan I. (2015-09-01). "Systematics and Phylogeny of Paleocene-Eocene Nyctitheriidae (Mammalia, Eulipotyphla?) with Description of a new Species from the Late Paleocene of the Clarks Fork Basin, Wyoming, USA". Journal of Mammalian Evolution. 22 (3): 307–342. doi:10.1007/s10914-014-9284-3. ISSN 1573-7055. S2CID 15369336.
  7. ^ Hooker, Jerry J. (2018-03-30). "A mammal fauna from the Paleocene-Eocene Thermal Maximum of Croydon, London, UK". Proceedings of the Geologists' Association. 131 (5): 458–473. doi:10.1016/j.pgeola.2018.01.001. ISSN 0016-7878. S2CID 134941309.