Eureptilia

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Eureptilians
Temporal range: Pennsylvanian - Recent
Labidosaurikos meachami, an early eureptilian of the family Captorhinidae
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Sauropsida
Clade: Eureptilia
Olson, 1947
Subgroups

Brouffia
Coelostegus
Thuringothyris
Captorhinidae
Romeriida

Eureptilia ("true reptiles") is one of the two major clades of the Sauropsida, the other being Anapsida (or Parareptilia). Eureptilia includes not only all Diapsids, but also a number of primitive Permo-Carboniferous forms previously classified under the Anapsida, in the old (no longer recognised) order "Cotylosauria".

Primitive eureptilians were all small, superficially lizard-like forms, that probably scurried through the Paleozoic undergrowth in search of insects. The diapsids are the only eureptilian clade to continue beyond the Permian Period. Eureptilia is defined by the skull having greatly reduced supraoccipital, tabular, and supratemporal bones that are no longer in contact with the postorbital.

Phylogeny[edit]

Cladogram modified after Muller and Reisz (2006):[1]

Reptilia 

Anapsida (=Parareptilia)


 Eureptilia 

Coelostegus





Thuringothyris



Captorhinidae





Brouffia


 Romeriida 

Paleothyris




Hylonomus




Protorothyrididae



Diapsida









References[edit]

  1. ^ Muller, J. and Reisz, R.R. (2006). "The phylogeny of early eureptiles: Comparing parsimony and Bayesian approaches in the investigation of a basal fossil clade." Systematic Biology, 55(3):503-511. doi:10.1080/10635150600755396

External links[edit]