Eophis

Eophis is an early genus of stem-snake (clade Ophidia)[1] containing one species, Eophis underwoodi, from the Middle Jurassic (Bathonian) from the Forest Marble Formation of United Kingdom. Eophis is the earliest known member of the ophidia group. It was found in the mammal bed in Kirtlington Quarry.

Eophis
Temporal range: Bathonian
↓
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Clade: Ophidia
Genus: †Eophis
Caldwell et al. 2015
Type species
Eophis underwoodi
Caldwell et al. 2015

Phylogeny

Cladogram based in the phylogenetic analysis by Caldwell et al. (2015):[1]

Ophidia
 

Portugalophis

 
 

Parviraptor

 
 
 

Eophis

 
 
 

Unnamed sp.

 
 

Diablophis

 
 
 
 
 

Dinilysia

 
 
 

Madtsoiidae

 
 
 

Najash

 
 
 

Coniophis

 
 

Serpentes (Modern snakes)

 
 
 
 
 
 
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See also

References
  1. Caldwell, M. W.; Nydam, R. L.; Palci, A.; Apesteguía, S. N. (2015). "The oldest known snakes from the Middle Jurassic-Lower Cretaceous provide insights on snake evolution". Nature Communications. 6: 5996. doi:10.1038/ncomms6996. PMID 25625704.


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