Coelostegus

Coelostegus Temporal range: Late Carboniferous, 307.1–305 Ma PreЄ Є O S D C P T J K Pg N ↓
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
clade:	Eureptilia
Genus:	†Coelostegus Carroll & Baird, 1972
Species:	†C. prothales
Binomial name
Coelostegus prothales Carroll & Baird, 1972

Coelostegus is an extinct genus of Late Carboniferous (late Westphalian stage) basal reptile known from Pilsen of Czech Republic. It is known from the holotype ČGH 3027, a partial skeleton of an immature individual. It was collected in the Nýřany site from the Nýřany Member of the Kladno Formation. It was first named by was first named by Robert L. Carroll and Donald Baird in 1972 and the type species is Coelostegus prothales.^[1] The most recent phylogenic study of primitive reptile relationships found Coelostegus to be the basalmost known eureptile.^[2]

References

1. ^ Robert L. Carroll and Donald Baird (1972). "Carboniferous Stem-Reptiles of the Family Romeriidae". Bulletin of the Museum of Comparative Zoology 143 (5): 321–363. 
2. ^ Müller, 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. PMID 16861212.