Steneofiber

Steneofiber
Temporal range: Early Oligocene–Middle Miocene
Fossil jaw
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Suborder: Castorimorpha
Family: Castoridae
Subfamily: †Castorinae
Genus: †Steneofiber
Geoffroy, 1833
Species
  • †S. castorinus
  • †S. depereti
  • †S. eseri
  • †S. jaegeri
  • †S. minutus
  • †S. sansaniensi
  • †S. wezensis

Steneofiber is an extinct genus of beaver from Eurasia.

This small, 30 cm (1 ft) long creature probably lived in large fresh water lakes, like present day beavers. A semiaquatic lifestyle is indicated by the presence of a combing-claw, which living beavers use to waterproof their fur.[1] Most likely, it was incapable of bringing down trees like its modern relatives. Steneofiber was more terrestrial than modern beavers, living in burrows. The finding of a possible family group of Steneofiber skeletons in France has been used to infer that the genus employed a K-selected reproductive strategy like modern beavers, in which extensive parental care is given to a small number of offspring.[1] Steneofiber is among earliest known members of the subfamily Castorinae, which includes beavers more closely related to the two living species than to the recently extinct Giant Beaver.[2] It is probably descended from the earliest castorine, Propalaeocastor.[3]

References

  1. ^ a b Hugueney, M. and F. Escuillié (1995). "K-strategy and adaptative specialization in Steneofiber from Montaigu-le-Blin (dept. Allier, France; Lower Miocene, MN 2a, ±23 Ma): first evidence of fossil life-history strategies in castorid rodents". Palaeogeography, Palaeoclimatology, Palaeoecology 113 (2–4): 217–225. doi:10.1016/0031-0182(95)00050-V. 
  2. ^ Korth, W.W. (2002). "Comments on the systematics and classification of the beavers (Rodentia, Castoridae)". Journal of Mammalian Evolution 8 (4): 279–296. doi:10.1023/A:1014468732231. 
  3. ^ Wu, W., Meng, J., Ye, J. and Ni, X. (2002). "Propalaeocastor (Rodentia, Mammalia) from the early Oligocene of Burqin Basin, Xinjiang". American Museum Novitates 3461: 1–16. doi:10.1206/0003-0082(2004)461<0001:PRMFTE>2.0.CO;2. hdl:2246/2771.