Priscagamidae

rdf:langString Priscagamidae

rdf:langString Borsuk-Białynicka and Moody, 1984

rdf:langString Late Cretaceous-Eocene,

rdf:langString Heterodontagama

rdf:langString Mimeosaurus

rdf:langString Phrynosomimus

rdf:langString Priscagama

rdf:langString ?Pleurodontagama

rdf:langString Genera

rdf:langString Priscagaminae (Borsuk-Bialynicka and Moody 1984)

rdf:langString Priscagamidae

rdf:langString Priscagamidae is an extinct family of iguanian lizards known from the Late Cretaceous of Mongolia and China and the Eocene of India, spanning a range from 75 to 54 million years ago. It includes the genera Heterodontagama, Mimeosaurus, Phrynosomimus, Priscagama, and possibly Pleurodontagama. The first fossils of priscagamids were found in the Djadochta and formations of Mongolia. More recently they have been found in the in India, leading to the naming of Heterodontagama in 2013. Priscagamidae was originally described as a subfamily of Agamidae called Priscagaminae in 1984, but it was reclassified as a distinct family in 1989. Most phylogenetic analyses (analyses of evolutionary relationships) still find a close relationship between Priscagamidae and Agamidae (both have been grouped under a clade called Chamaeleontiformes), although a 2015 study found it to be basal to all other iguanian clades, warranting its removal from Iguania and placement in a larger clade called Iguanomorpha.