Eomanis

Eomanis ("dawn pangolin") is the earliest known true (and scaled) pangolin from extinct family Eomanidae (and extinct superfamily Eomanoidea) within suborder Eupholidota. It lived during the Eocene in Europe. Eomanis fossils found in the Messel Pit in Germany are very similar in size and anatomy to living pangolins of the genus Manis, indicating that pangolins have remained largely unchanged in morphology and behavior for 50 million years. However, unlike modern pangolins, its tail and legs did not bear scales. According to the stomach contents of the excellently preserved Messel specimens, Eomanis’ diet consisted of both insects and plants.

Eomanis
Temporal range: 48.6–40.4 Ma Middle Eocene
Fossil of Eomanis waldi
Life reconstruction of
Eomanis waldi
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Pholidota
Suborder: Eupholidota
Superfamily: †Eomanoidea
Gaudin, 2009
Family: †Eomanidae
Storch, 2003
Genus: †Eomanis
Storch, 1978
Type species
†Eomanis waldi
Storch, 1978

Another early mammal discovered in the Messel Pit that was similar in anatomy and likely also had an insectivorous diet was Eurotamandua.[1] Despite its name, Eurotamandua was almost certainly not a xenarthran because it lacked the characteristic xenarthran joints present in all living and extinct xenarthrans. In addition, xenarthrans existed exclusively in South America for almost the entire Cenozoic era. They spread to North America after the Panama land bridge formed 3 million years ago, but never reached Eurasia or Africa. Eurotamandua was likely also an early pangolin, possibly the ancestor of Eomanis.

Phylogeny

Phylogenetic position of genus Eomanis within order Pholidota.[2][3]

 Pholidotamorpha 
 

†Palaeanodonta

 
 Pholidota 
 

†Euromanis

 
 ? 

†pholidota sp. (BC 16’08)

 
 
 

†Eurotamanduidae

 
 Eupholidota 
 

Manoidea

 
 †Eomanoidea 
 †Eomanidae 
 †Eomanis 

†Eomanis waldi

 
 
 
 
 
 sensu stricto 
 (Pholidota sensu lato) 

References
  1. Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 209. ISBN 1-84028-152-9.
  2. Gaudin, Timothy (2009). "The Phylogeny of Living and Extinct Pangolins (Mammalia, Pholidota) and Associated Taxa: A Morphology Based Analysis" (PDF). Journal of Mammalian Evolution. Heidelberg, Germany: Springer Science+Business Media. 16 (4): 235–305. doi:10.1007/s10914-009-9119-9.
  3. Kondrashov, Peter; Agadjanian, Alexandre K. (2012). "A nearly complete skeleton of Ernanodon (Mammalia, Palaeanodonta) from Mongolia: morphofunctional analysis". Journal of Vertebrate Paleontology. 32 (5): 983–1001. doi:10.1080/02724634.2012.694319. ISSN 0272-4634.
  • Cox, Barry; Savage, R. J. G.; Gardiner, Brian; Dixon, Dougal (1988). "Insectivores and creodonts". Macmillan Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. Macmillan London Limited. p. 213. ISBN 0-333-48699-4.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.