Family ChikilidaeJurassic (200β145.5 million years ago) to present; perforate stapes; septomaxillae and prefrontals absent; lower jaws possess two rows of teeth; 1 genus, 7 species; northeastern India.Family DermophiidaeCretaceous (145.5β65.5 million years ago) to present; secondary annuli and annular scales present; viviparous; 4 genera,β¦
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