Eophis

Eophis; Temporal range: Bathonian PreЄ Є O S D C P T J K Pg N ↓
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

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.

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)

References

1 2 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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[oldest_snakes-1] 1 2 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.