Anguimorphs of the infraorder Anguimorpha include the anguids

Anguidae

The Anguidae is a large and diverse family of lizards native to the northern hemisphere. The group includes the slowworms, glass lizards, and alligator lizards, among others. Anguidae is divided into three subfamilies and contains 94 species in eight genera. Their closest living relatives are the...

 (alligator lizard

Alligator lizard

Alligator Lizard may refer to one of the following:Species of the genus Elgaria:*Northern Alligator Lizard*Southern Alligator LizardSpecies of the genus Gerrhonotus.Species of the genus Abronia ...

s, glass lizard

Glass lizard

The glass lizards or glass snakes, genus Ophisaurus, are a group of reptiles that resemble snakes, but are actually lizards. Although most species have no legs, their head shape and the fact that they have movable eyelids and external ear openings identify them as lizards. A few species have very...

s, galliwasps and legless lizard

Legless lizard

Legless lizard may refer to any of several groups of lizards which have independently lost limbs or reduced them to the point of being of no use in locomotion. It is the common name for the family Pygopodidae, but often refers to other groups, such as limbless anguids, depending upon the region of...

s), monitor lizard

Monitor lizard

Monitor lizards are usually large reptiles, although some can be as small as in length. They have long necks, powerful tails and claws, and well-developed limbs. Most species are terrestrial, but arboreal and semiaquatic monitors are also known...

s, the extinct mosasaur

Mosasaur

Mosasaurs are large extinct marine lizards. The first fossil remains were discovered in a limestone quarry at Maastricht on the Meuse in 1764...

s, and helodermatids

Heloderma

Heloderma, the only genus of the family Helodermatidae, consists of venomous lizards native to the southwestern United States, Mexico and as far south as Guatemala. It includes two separate species, with six subspecies...

 (Gila monster

Gila monster

The Gila monster is a species of venomous lizard native to the southwestern United States and northwestern Mexican state of Sonora...

 and beaded lizard

Beaded lizard

The Beaded lizard is a species of venomous lizard found principally in Mexico and southern Guatemala. Along with its congener, the Gila monster , it is the only lizard to have evolved an overt venom delivery system, and has long been considered the only venomous lizard...

). The infraorder was named by Fürbringer in 1900 to include all autarchoglossans closer to Varanus and Anguis

Anguis

Anguis, or the slow worm, is a small genus of lizard in the family Anguidae. It has two described species.Although they are lizards, slow worms have lost their limbs completely and are often mistaken as snakes. Slow-worms typically grow to between , with the females slightly larger than the males...

than Scincus

Scincus

Scincus is a genus of skinks . All three species are typical desert inhabitants, living in sandy and dune-like areas, with a hot and dry climate. They can be found from Arabia to the Sahara desert....

. These lizards, along with iguania

Iguania

Iguania is the suborder of Squamata that contains the iguanas, chameleons, agamids, and "New World lizards" such as anoles and Phrynosomatidae...

ns and snake

Snake

Snakes are elongate, legless, carnivorous reptiles of the suborder Serpentes that can be distinguished from legless lizards by their lack of eyelids and external ears. Like all squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales...

s, constitute the proposed "venom clade" Toxicofera

Toxicofera

Toxicofera , is a hypothetical clade which represents about 4600 species of extant squamates It encompasses all venomous reptile species, as well as numerous related non-venomous species....

 of all venomous reptiles.

Taxonomy

• Infraorder Anguimorpha
  • †Eolacerta robusta
  • †Paravaranus angustifrons
  • Varanoidea
    Varanoidea
    Varanoidea is a superfamily of lizards, including the well-known family Varanidae . Also included in the Varanoidea are such extinct marine and semi-aquatic forms as mosasaurs and dolichosaurs, the venomous helodermatids , the Lanthanotidae , and the extinct Necrosauridae.Throughout their long...
    
     (Platynota)
    • Varanidae
      Varanidae
      Varanidae is a group of lizards of the superfamily Varanoidea. The family is a group of carnivorous lizards which includes the largest living lizard, the Komodo dragon, and the crocodile monitor. Varanidae contains the living genus Varanus and a number of extinct taxa...
      
      
    • Lanthanotidae
      Lanthanotidae
      The Earless monitor lizard is a semi-aquatic, brown lizard native to northern Borneo. It is the only species in the family Lanthanotidae, a group related to the true monitor lizards, as well as to the beaded lizards....
      
      
    • Helodermatidae
    • †Mosasauridae
  • Anguoidea (= Diploglossa)
    • Anguidae
      Anguidae
      The Anguidae is a large and diverse family of lizards native to the northern hemisphere. The group includes the slowworms, glass lizards, and alligator lizards, among others. Anguidae is divided into three subfamilies and contains 94 species in eight genera. Their closest living relatives are the...
      
      
    • Anniellidae
    • Xenosauridae
      Xenosauridae
      The Xenosauridae is a family of lizards native to Central America and China. Also known as knob-scaled lizards, they have rounded, bumpy scales and osteoderms. Most species prefer moist or semi-aquatic habitats, although they are widespread within their native regions, with some even inhabiting...