Earth boas

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Earth boas
Cuban dwarf boa (Tropidophis melanurus)

Cuban dwarf boa ( Tropidophis melanurus )

Systematics
Superordinate : Scale lizards (Lepidosauria)
Order : Scale reptiles (Squamata)
without rank: Toxicofera
Subordination : Snakes (serpentes)
incertae sedis
Family : Earth boas
Scientific name
Tropidophiidae
Brongersma , 1951

The Erdboas (Tropidophiidae) are a family of snakes found in Cuba , the Cayman and Caicos Islands and in northwestern South America.

features

Earth boas are small to medium-sized snakes and display both native and inferred traits . The primitive include the remains of the pelvic girdle , which are still present in all but one species. The derived characteristics include the well-developed tracheal lungs . In contrast to the boas and pythons , the right lung is not reduced in the earth boas , but the left lung has receded or is missing. Both ovaries are well developed. The hyoid horns stand close together and are aligned parallel. There are no heat-sensitive labial pits .

Like the real boa snakes, the earth boas are ovoviviparous , that is, they give birth to live young.

Genera and species

The extinct earth boa Messelophis ermannorum from the Messel Pit .
Tropidophis semicinctus

There are two genera with 34 species:

In addition to the recent species, some extinct species are known from Europe, North and South America, including Messelophis from the Messel Pit .

Web links

Commons : Erdboas (Tropidophiidae)  - Collection of images, videos and audio files

Individual evidence

  1. Mark O'Shea: Boas & Pythons of the World. New Holland Publishers, 2011, ISBN 1-8477-3872-9 , p. 19.
  2. John P. Rafferty: Reptiles and amphibians. Britannica Educational Pub., 2011, p. 131.
  3. ^ Tropidophiidae in The Reptile Database
  4. Family Tropidophiidae Cope 1894 (dwarf boa). The Paleobiology Database.