Information about Lepidosauria

The Late Triassic (also known as Upper Triassic, or Keuper) is the third and final of three epochs of the Triassic period. It spans the time between 228 ± 2 Ma and 199.6 ± 0.6 Ma (million years ago).
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U. inornata

Binomial name
Uma inornata
Cope, 1895

The Coachella Valley Fringe-toed Lizard, Uma inornata, is a Californian species of lizard.
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Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. Scientific classification also can be called scientific taxonomy, but should be distinguished from folk taxonomy, which lacks scientific basis.
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Chordata
Bateson, 1885

Typical Classes

See below

Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates.
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Sauropsida*
Goodrich, 1916

Subclasses

• Anapsida
• Diapsida
  

Synonyms

• Reptilia Laurenti, 1768

Reptiles are tetrapods and amniotes, animals whose embryos are surrounded by an amniotic membrane, and members of the class
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Diapsida
Osborn, 1903

Groups

See text

Diapsids ("two arches") are a group of tetrapod animals that developed two holes (temporal fenestra) in each side of their skulls, about 300 million years ago during the late Carboniferous period.
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Lepidosauromorpha
Benton, 1983

Orders

• Thalattosauriformes (extinct)
• Placodontia (extinct)
• Nothosauroidea (extinct)
• Plesiosauria (extinct)
• Eolacertilia (extinct)
• Sphenodontia
• Squamata
  

Lepidosauromorpha
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order (Latin: ordo, plural ordines) is a rank between class and family (termed a taxon at that rank). The superorder is a rank between class and order. Exact details of formal nomenclature depend on the Nomenclature Code which applies.
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Sphenodontia
Williston, 1925

Families

• Gephyrosauridae
• Pleurosauridae
• Sphenodontidae
  

Sphenodontia is an order of lizard-like reptiles that includes only one living genus, the tuatara (Sphenodon).
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Squamata
Oppel, 1811



Suborders
see text

This article is about the Squamata order of reptiles. For the Roman scale armour see: Lorica squamata.

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Sauropsida*
Goodrich, 1916

Subclasses

• Anapsida
• Diapsida
  

Synonyms

• Reptilia Laurenti, 1768

Reptiles are tetrapods and amniotes, animals whose embryos are surrounded by an amniotic membrane, and members of the class
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Sphenodon
Gray, 1831



Species

Sphenodon punctatus (Gray, 1842)
Sphenodon guntheri (Buller, 1877)
Sphenodon diversum
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Lacertilia*
Günther, 1867

Families

Many, see text.

Lizards are reptiles of the order Squamata, normally possessing four legs, external ear openings and movable eyelids.
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Serpentes
Linnaeus, 1758

Infraorders and Families

• Alethinophidia - Nopcsa, 1923
• Acrochordidae- Bonaparte, 1831

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Amphisbaenia
Gray, 1844



The Amphisbaenia are a suborder of peculiar, usually legless squamates closely related to lizards and snakes, in spite of their resemblance to earthworms (many
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Sauropsida*
Goodrich, 1916

Subclasses

• Anapsida
• Diapsida
  

Synonyms

• Reptilia Laurenti, 1768

Reptiles are tetrapods and amniotes, animals whose embryos are surrounded by an amniotic membrane, and members of the class
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Squamata
Oppel, 1811



Suborders
see text

This article is about the Squamata order of reptiles. For the Roman scale armour see: Lorica squamata.

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Sphenodontia
Williston, 1925

Families

• Gephyrosauridae
• Pleurosauridae
• Sphenodontidae
  

Sphenodontia is an order of lizard-like reptiles that includes only one living genus, the tuatara (Sphenodon).
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Sphenodon
Gray, 1831



Species

Sphenodon punctatus (Gray, 1842)
Sphenodon guntheri (Buller, 1877)
Sphenodon diversum
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Sauropterygia
Owen, 1860

Orders

• ?Thalattosauriformes
• Placodontia
• Nothosauroidea
• Plesiosauria
  

Sauropterygia ("lizard flippers") is a group of very successful aquatic reptiles that flourished during the Age of the Dinosaurs
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Nothosauria
Baur, 1889

Suborders

• Suborder Pachypleurosauria
• Pachypleurosauridae
• '''Suborder Nothosauria
• Simosauridae

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Plesiosauria
de Blainville, 1835

Suborders

Plesiosauroidea
Pliosauroidea
Plesiosauria (IPA /ˈplisiəˌsɔɹ/) (Greek: plesios meaning 'near to' and
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