Paleollanosaurus is an extinct genus of sphenodontian reptile that lived during the Late Triassic. The type species P. fraseri was described from a jaw fragment found in West Texas in North America.A. B. Heckert. 2004. Late Triassic microvertebrates from the lower Chinle Group (Otischalkian-Adamanian: Carnian), southwestern U.S.A. New Mexico Museum of Natural History and Science Bulletin 27:1-170 Remains have also been reported from Switzerland. It is generally considered a basal sphenodontian. Cladogram following Chambi-Trowell et al., 2021.
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