Biology:Liaoconodon

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Short description: Extinct family of mammals

Liaoconodon
Temporal range: Aptian, 120 Ma
↓
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Clade: †Eutriconodonta
Genus: †Liaoconodon
Meng, Wang & Li, 2011
Species
  • †L. hui Meng, Wang & Li, 2011 (type)

Liaoconodon is an extinct genus of early mammal from the early Cretaceous (early Aptian stage, approximately 120 Ma). It is a eutriconodont which lived in what is now the Jianchang of Liaoning Province, eastern China . It is known from the holotype IVPP V 16051, which consists of nearly complete skeleton and skull. It was found in the Jiufotang Formation (Jehol Biota) near Xiaotaizi, Lamadong. It was first named by Jin Meng, Yuanqing Wang and Chuankui Li in 2011 and the type species is Liaoconodon hui.[1]

Studies on its anatomy show that it was a semi-aquatic mammal, having a long body and paddle-like limbs.[2]

Phylogeny

Cladogram after Thomas Martin et al. 2015[3]

 Eutriconodonta 
Amphilestidae
 

Phascolotherium

 
 

Amphilestes

 
 
 
 
Amphidontidae
 

Hakusanodon

 
 

Juchilestes

 
 
 
Gobiconodontidae
 

Spinolestes

 
 
 

Gobiconodon

 
 

Repenomamus

 
 
 
 
 

Jeholodens

 
 
 

Yanoconodon

 
 
 

Liaoconodon

 
 
Volaticotheria
 

Volaticotherium

 
 

Argentoconodon

 
 
Triconodontidae
 

Trioracodon

 
 
 

Triconodon

 
 
 

Priacodon

 
 
 

Arundelconodon

 
 
 

Meiconodon

 
 
 

Astroconodon

 
 
 

Alticonodon

 
 

Corviconodon

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

References

  1. ↑ Jin Meng, Yuanqing Wang and Chuankui Li (2011). "Transitional mammalian middle ear from a new Cretaceous Jehol eutriconodont". Nature 472 (7342): 181–185. doi:10.1038/nature09921. PMID 21490668. 
  2. ↑ Meng Chen, Gregory Philip Wilson, A multivariate approach to infer locomotor modes in Mesozoic mammals, Article in Paleobiology 41(02) · February 2015 doi:10.1017/pab.2014.14
  3. ↑ Thomas Martin, Jesús Marugán-Lobón, Romain Vullo, Hugo Martín-Abad, Zhe-Xi Luo & Angela D. Buscalioni (2015). A Cretaceous eutriconodont and integument evolution in early mammals. Nature 526, 380–384. doi:10.1038/nature14905

Wikidata ☰ Q148096 entry