Biology:Zalambdalestes

From HandWiki
Short description: Genus of shrew-like mammal from the Upper Cretaceous period

Zalambdalestes
Temporal range: Late Cretaceous
Zalambdalestes lechei.jpg
Zalambdalestes lechei skull and lower jaw, Museum of Evolution Warsaw.
Scientific classification e
Missing taxonomy template (fix): Incertae sedis/Eutheria
Family: Zalambdalestidae
Genus: Zalambdalestes
Gregory & Simpson, 1926
Species
  • Z. lechei Gregory & Simpson, 1926 (type)

Zalambdalestes (meaning much-like-lambda robber) is an extinct genus of eutherian mammal known from the Upper Cretaceous in Mongolia.

Life restoration of Z. lechei

Zalambdalestes was a hopping animal with a long snout, long teeth, a small brain and large eyes. It was about 20 centimetres (7.9 in) long, with a head only 5 centimetres (2 in) long. It had strong front paws and even stronger rear ones, sharing specializations to saltation similar to those of modern rabbits.[1][2] It was most likely not a placental due to the presence of an epipubic bone,[3][1]

Its diet was probably composed mainly of insects that it hunted in the forest undergrowth using its sharp, interlocking teeth.[4] Unlike modern placental mammals, Zalambdalestes had an epipubic bone, meaning it was probably restricted reproductively in the same way as modern monotremes and marsupials.[1]

Life reconstruction of Z. lechei

References

  • Parker, Steve. Dinosaurs: the complete guide to dinosaurs. Firefly Books Inc, 2003. Pg. 402
  1. 1.0 1.1 1.2 Rose, Kenneth D.; Archibald, J. David, eds (2005). The Rise of Placental Mammals: Origins and Relationships of the Major Extant Clades. Johns Hopkins University Press. ISBN 9780801880223. 
  2. Chen, Meng; Wilson, Gregory P. (2015). "A multivariate approach to infer locomotor modes in Mesozoic mammals". Paleobiology 41 (2): 280–312. doi:10.1017/pab.2014.14. Bibcode2015Pbio...41..280C. 
  3. Dykes, Kevin T.. "Mesozoic Mammals; Zalambdalestidae, Lipotyphla?, Cimolestidae and Cretaceous Taeniodonta". Mesozoic Eucynodonts. http://home.arcor.de/ktdykes/zalambda.htm. 
  4. Palmer, D., ed (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 201. ISBN 1-84028-152-9. 

Further reading

Wikidata ☰ Q765555 entry