Anguidae
| Anguidae Temporal range: Late Cretaceous to present
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| Anguis fragilis | |
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Anguidae
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Anguis |
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Anguidae is the name of a large and diverse family of lizards native to the Northern Hemisphere. The group includes the slowworms, glass lizards, and alligator lizards, among others. The family is divided into three subfamilies and contains 94 species in eight genera. They have hard osteoderms beneath their scales, and many of the species have reduced or absent limbs, giving them a snake-like appearance, although others are fully limbed.[2]
Anguids are carnivorous or insectivorous, and inhabit a wide range of different habitats. The group includes both egg-laying and viviparous species. Most species are terrestrial, although some climb trees.[2]
Anguids have a relatively good fossil record. The oldest known anguid is Odaxosaurus, from the late Campanian of Canada, approximately 75 million years ago, and anguids are relatively common as fossils the Late Cretaceous and Paleogene of western North America. Odaxosaurus and other Late Cretaceous anguids already exhibit many features found in living anguids, including chisel-like teeth and armor plates in the skin, suggesting a long evolutionary history for the group. Anguids were particularly diverse during the Paleocene and Eocene in North America; some species, such as Glyptosaurus, grew to large size and evolved a highly specialized crushing dentition. The long fossil record for Anguidae in North America suggests that the group probably evolved in North America during the Cretaceous before dispersing to Europe in the Paleogene.
Classification
Family ANGUIDAE
- Subfamily Anguinae
- Genus Anguis - slow worms (two species)
- Genus Dopasia - Asian glass lizards (six species)
- Genus Hyalosaurus - North African glass lizard (one species)
- Genus Ophisaurus - American glass lizards (five species)
- Genus Pseudopus - scheltopusik (one species)
- Subfamily Diploglossinae
- Genus Celestus - galliwasps (25 extant species)
- Genus Diploglossus - galliwasps (19 species)
- Genus Ophiodes - (four species)
- Subfamily Gerrhonotinae - alligator lizards
- Genus Gerrhonotus (four species) - alligator lizards
- Genus Abronia (27 species) - arboreal alligator lizards
References
External links
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Wikispecies has information related to: Anguidae |
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Wikimedia Commons has media related to Anguidae. |
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