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Temporal range: Early TriassicLate Triassic[1]
Skull of Paliguana
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Lepidosauromorpha
Order: Eolacertilia
Robinson, 1967

Eolacertilia ("dawn lizards") is an extinct clade of lepidosauriform diapsid reptiles known from the Late Permian to the Late Triassic. It is uncertain as to whether they are a natural group and it has been suggested that they form a "waste basket" taxon. Currently, the only members of the group are Paliguana and Kuehneosauridae.[2] Other genera were transferred to basal groups within Diapsida (such as Palaeagama and Saurosternon), Archosauromorpha (Tanystropheus and Cteniogenys) and even Sauropodomorpha (Fulengia).[3]


  1. ^ Jones, M. E.; Anderson, C.; Hipsley, C. A.; Müller, J.; Evans, S. E.; Schoch, R. R. (2013). "Integration of molecules and new fossils supports a Triassic origin for Lepidosauria (lizards, snakes, and tuatara)". BMC Evolutionary Biology. 13: 208. doi:10.1186/1471-2148-13-208. PMC 4016551Freely accessible. PMID 24063680. 
  2. ^ Susan E. Evans and Magdalena Borsuk−Białynicka (2009). "A small lepidosauromorph reptile from the Early Triassic of Poland" (PDF). Paleontologica Polonica. 65: 179–202. 
  3. ^ Evans, S. E. (2003). "At the feet of the dinosaurs: The early history and radiation of lizards". Biological Reviews. 78 (4): 513–551. doi:10.1017/S1464793103006134. PMID 14700390.