Lepidosauromorph

The Lepidosauromorphs are a large group of reptiles. It includes all diapsids closer to lizards than to archosaurs.

Lepidosauromorphs Temporal range: Earliest Triassic - Holocene,[1] 252–0 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Skull of Sophineta cracoviensis
Collage of five lepidosaurs. From top left to right: Sphenodon punctatus, Dendroaspis polylepis, Iguana iguana, Smaug breyeri and Malayopython reticulatus.
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Diapsida
Clade:	Neodiapsida
Clade:	Sauria
Clade:	Lepidosauromorpha Benton, 1983
Subgroups
see text.
Synonyms
Ankylopoda (obsolete clade) Pan-Lepidosauria Gauthier & de Queiroz, 2020

The only living sub-group is the Lepidosauria: lizards, snakes, and the tuatara.

The most important fossil group, the Sauropterygia, includes the plesiosaurs.

Classification

• Subclass Diapsida
  • Infraclass Lepidosauromorpha
    • Superorder †Sauropterygia – †Plesiosaurs
    • Lepidosauriformes
      • Order †Eolacertilia
      • Superorder Lepidosauria
        • Order Sphenodontia – Tuatara
        • Order Squamata
          • Suborder Amphisbaenia – Worm lizards
          • Suborder Lacertilia* – Lizards
            • Family †Mosasauridae
          • Suborder Serpentes – Snakes