Diversity of Snakes 0.0 / 5 ? BiologyReptiles and DinosaursUniversityNone Created by: Becky_BerryCreated on: 23-11-23 12:10 Anatomy in most snakes there is less tail and more body, but species such as vine snakes have much longer tails snake skulls are adapted to engulf prey, and constrictors have recurved teeth can differentiate between venomous and non-venomous species using skull shape, type of teeth, and teeth position snakes possess a pit organ for receiving infrared radiation, which enables them to generate a 'thermal image' of predators and prey 1 of 6 Evolution part of Toxicofera appeared and diverged around 160-170 million years ago origins unclear as snake skeletons are very fragile extensive diversification during the mid to late Cretaceous 2 of 6 Venom venomous snakes deliver toxins through fangs elapines have short front fangs, and vipers have long, hinged, and hollow fangs neurotoxins disrupt neurotransmitters haemotoxins disrupt blood coagulation cytotoxins cause cell necrosis 3 of 6 Diversity: Alethinophidia Part 1 Acrochoridae: the wart snakes (monogeneric) Aniliidae: the false coral snake (monospecific) Anomochilidae: the dwarf pipe snakes (monogeneric) Atractaspididae: the burrowing asps Boidae: the boas Bolyeridae: the splitjaw snakes (monospecific) Colubridae: the colubrid snakes Cyclocoridae: the cyclocorids Cylindrophiidae: the Asian pipe snakes (monogeneric) Elapidae: the cobras, kraits, taipans, mambas, and coral snakes Homalopsidae: the Indo-Australian water snakes/mudsnakes/bockadams Lamprophiidae: the lamprophiids Loxocemidae: the Mexican burrowing snake (monospecific) Micrelapidae: the two-headed snakes (monogeneric) Pareidae: the snail-eating snakes Prosymnidae: the shovel-snout snakes (monogeneric) Psammophiidae: a family of elapoid snakes formerly identified as a subfamily of Lamprophiidae Pseudaspidae: mock vipers/mole snakes 4 of 6 Diversity: Alethinophidia Part 2 Pseudoxyrhophiidae: a family of elapoid snakes, found mostly in Madagascar, that were formerly placed as a subfamily of the Lamprophiidae Pythonidae: pythons Tropidophiide: the dwarf boas/thunder snakes/woodsnakes Uropeltidae: the shield-tailed snakes Viperidae: the vipers Xenodermidae: a family of small or moderately sized nocturnal snakes, which inhabit moist forest habitats of Asia (monospecific) Xenopeltidae: the sunbeam snakes (monogeneric) Xenophidiidae: the spinejaw snakes (monogeneric) 5 of 6 Diversity: Scolecophidia Anomalepidae: the primitive blind snakes Gerrhopilidae: the Indo-Malayan blind snakes Leptotyphlopidae: the slender blindsnakes/threadsnakes Typhlopidae: the blindsnakes Xenotyphlopidae: the Malagasy blind snakes (monogeneric) 6 of 6
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