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    Evolutionary Relationships and Biogeography of the Macroteiid Lizards (Family Teiidae, Subfamily Teiinae)

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    Subject
    Macroteiid; Lizard; Teiidae; Teiinae; Mesozoic; Pliocene
    Author
    Presch, William
    Journal Title
    Scas: Bulletin of the Southern California Academy of Sciences
    Volume
    73
    Issue
    scas/vol73/iss1; 1
    Metadata
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    URI
    https://scholar.oxy.edu/handle/20.500.12711/9333
    Abstract
    The evolutionary relationships of nine genera of macrotciid lizard (Ameiva, Cnemidophorus, Kentropyx, Dicrodon, Teius, Callopistes, Crocodilurus Tupinambis, and Dracaena are discussed based on an analysis of 25 osteological character states. A phenetic scheme based on the average linkage technique ami an evolutionary sequence diagram arc presented. The result places the nine genera into two groups: A. Ameiva, Cnemidophorus, Kenlropyx, Teius, and Dicrodon; B, Callopistes, Tupinambis, Crocodilurus, and Dracaena. Group B is considered the most derived group of genera; Dracaena being the most derived genus. An analysis of the fossil record of the macroteiids in association with present distributional patterns suggests thai the ancestors of the macroteiids arose in North America and entered South America at the close of the Mesozoic Era. With the closure of the Panamanian Seaway in Early Pliocene, movement of Ameiva north and Cnemidophorus south, occurred Subsequent geologic activity and contraction of the tropical climate, are responsible for for present distribution of the genera.
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