What classifies something as Squamata?

What classifies something as Squamata?

Squamata (scaled reptiles) is the most diverse order of extant reptiles, comprised of the lizards and snakes and characterized a flexible jaw structure (movable quadrate bones) and having scales or shields rather than shells or secondary palates.

What are the two types of Squamata?

Classification. The order Squamata is divided into two separate suborders: Sauria (lizards) and Serpentes (snakes). There are about 6500 to 7000 species in the order.

How many species are in the Squamata order?

Squamates (Squamata) are the most diverse of all the reptile groups, with approximately 7400 living species. Squamates include lizards, snakes, and worm lizards. There are two characteristics that unite the squamates.

What is the classification of lizard?

ReptilesLizards / ClassReptiles, as most commonly defined, are the animals in the class Reptilia, a paraphyletic grouping comprising all sauropsid amniotes except Aves. Living reptiles comprise turtles, crocodilians, squamates and rhynchocephalians. Wikipedia

How many families are in Squamata?

The over 10,900 extant squamates are divided into 60 families.

How many species are in the order rhynchocephalia?

The order Rhynchocephalia became virtually extinct over 65 million years ago and there are only two species of the tuatara (Sphenodon punctatus) remaining today (Fig. 2.1). The word tuatara means ‘peaked back’ in Maori, referring to its spiny crest.

What are the families of Squamata?


  • FamilyAcrochordidae. Acrochordidae: pictures (3)
  • FamilyAgamidae. Agamidae: information (1)
  • FamilyAmphisbaenia.
  • FamilyAmphisbaenidae. Amphisbaenidae: pictures (12)
  • FamilyAnguidae. Anguidae: information (1)
  • FamilyAniliidae. Aniliidae: pictures (4)
  • FamilyAnniellidae. Anniellidae: information (1)
  • FamilyAnomalepidae.

What are some characteristics of crocodilians?

The key characteristics of crocodilians include:

  • Elongated, structurally reinforced skull.
  • Wide gape.
  • Powerful jaw muscles.
  • Teeth set in sockets.
  • Complete secondary palate.
  • Oviparous.
  • Adults provide extensive parental care to young.

What are the seven classification of lizard?

Data Quality Indicators:

Class Reptilia Laurenti, 1768 – répteis, reptiles, Reptiles
Order Squamata Oppel, 1811 – Amphisbaenians, Lizards, Snakes, amphisbènes, lézards, serpents
Suborder Iguania – iguanes, Iguanas
Family Agamidae – Old World Arboreal Lizards, Agamid Lizards
Subfamily Agaminae

What is the classification of crocodile?

ReptilesCrocodiles / Class

What families are in Squamata?

The Squamata are members of the diapsid subclass Lepidosauromorpha, a group whose only living descendants are the lizards, amphisbaenians, snakes and tuataras. The lizards, amphisbaenians and snakes together constitute the Order Squamata (or Superorder Squamata, according to Estes 1983).

What is the classification of a bearded dragon?

ReptilesBearded dragons / Class

What is Squamata?

Squamata is the largest order of reptiles, comprising lizards, snakes and amphisbaenians (worm lizards), which are collectively known as squamates or scaled reptiles.

What is the taxonomic classification of squamates?

Squamates are classified within the following taxonomic hierarchy: Animals > Chordates > Vertebrates > Tetrapods > Reptiles > Squamates. Squamates are divided into the following taxonomic groups: Lizards (Lacertilia) – There are more than 4,500 species of lizards alive today, making them the most diverse group of all squamates.

What is Squamata (scaled reptiles)?

Squamata (scaled reptiles) is the largest recent order of reptiles and includes lizards and snakes. Members of the order Squamata are distinguished by their skin, which bears horny scales or shields.

How do squamate faunas differ from autarchoglossan fauna?

More diverse squamate faunas tend to have proportionately greater numbers of species of autarchoglossans, whereas less diverse faunas have relatively more iguanians. In assemblages with a substantial number of autarchoglossans, most of the iguanian and gekkotan fauna is arboreal, saxicolous (lives among rocks), nocturnal, or active in the shade.