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  • Lizard Species in Canada - The Canadian Encyclopedia
    Lizards are reptiles that belong to several suborders within the order Squamata (which also includes snakes) They are the most diverse group of living reptiles and are found on all continents except Antarctica There are six species of lizard currently found in Canada In addition, one species, the pygmy short-horned lizard, is extirpated
  • The origin of squamates revealed by a Middle Triassic lizard . . .
    Modern squamates (lizards, snakes and amphisbaenians) are the world's most diverse group of tetrapods along with birds and have a long evolutionary history, with the oldest known fossils dating from the Middle Jurassic period-168 million years
  • The Jurassic rise of squamates as supported by lepidosaur . . .
    The squamates (lizards, snakes, and relatives) today comprise more than 10,000 species, and yet their sister group, the Rhynchocephalia, is represented by a single species today, the tuatara The explosion in squamate diversity has been tracked back to the Cretaceous Terrestrial Revolution, 100
  • Dryad | Data -- Resolving the phylogeny of lizards and snakes . . .
    In contrast to most other recent studies, we find that dibamids and gekkotans are together the sister group to all other squamates Remarkably, we find that the distinctive scolecophidians (blind snakes) are paraphyletic with respect to other snakes, suggesting that snakes were primitively burrowers and subsequently re-invaded surface habitats
  • A new squamate phylogeny - SerpentResearch. com
    Lizards and snakes (living squamates) number about 9,400 known species Despite Squamata being one of the most diverse and conspicuous radiations of terrestrial vertebrates, no studies have attempted to reconstruct a phylogeny for the group with large-scale taxon sampling
  • Biology 2e, Biological Diversity, Vertebrates, Reptiles
    There are the 25 species of Crocodilia, two species of Sphenodontia, approximately 9,200 Squamata species, and about 325 species of Testudines Crocodilia They are found in freshwater, saltwater, and brackish habitats, such as rivers and lakes, and spend most of their time in water





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