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Topic: Crotaphytidae


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In the News (Mon 7 Dec 09)

  
  iqexpand.com   (Site not responding. Last check: 2007-10-22)
McGuire, J. (1996) Phylogenetic systematics of crotaphytid lizards (Reptilia: Iguania: Crotaphytidae).
Gambelia copei Cope's Leopard Lizard CROTAPHYTIDAE Gambelia, to honor William Gambel, a naturalist of western North America, and copei, to honor Edward...
Crotaphytidae Crotaphytus collaris Collared lizard Gambelia wislizenii Longnose leopard lizard Family Phrynosomatidae Holbrookia maculata Lesser earless lizard Phrynosoma cornutum Texas horned lizard Phrynosoma...
crotaphytidae.iqexpand.com   (222 words)

  
 183ABSTRACT   (Site not responding. Last check: 2007-10-22)
Descriptions of the mature spermatozoa of the lizards Crotaphytus bicinctores, Gambelia wislizenii (Crotaphytidae) and Anolis carolinensis (Polychrotidae) (Reptilia, Squamata, Iguania).
The spermatozoa of Crotaphytus bicinctores and Gambelia wislizenii (Crotaphytidae), and Anolis carolinensis (Polychrotidae) exhibit the squamate autapomorphies of a single perforatorium extending anteriorly from the apical tip of the paracrystalline subacrosomal cone, the presence of an epinuclear electron-lucent region, and extension of the fibrous sheath into the midpiece.
Crotaphytid sperm differ from those of polychrotids in several respects, including: the structure of the perforatorium, the size of the epinuclear electron-lucent region, aspects of the acrosome complex, the arrangement and structure of intermitochondrial dense bodies, and in the distance the fibrous sheath extends into the midpiece.
users.bigpond.net.au /Barrie_Jamieson/183ABSTRACT.html   (190 words)

  
 Digimorph - Gambelia wislizenii (long-nosed leopard lizard)
Crotaphytidae includes 10-11 species, occurring in southwestern North America from eastern Oregon to the Mississippi River and south to northern México.
Members of Crotaphytidae are diagnosed by the following characters (among others; see McGuire, 1996), most of which are visible in the animations above: prefrontal contacts jugal; parietal and frontal strongly overlap postorbital; jugal-ectopterygoid tubercle present; and tympanic crest of retroarticular process curves posteroventrally.
Phylogeography of a wide-ranging desert lizard, Gambelia wislizenii (Crotaphytidae).
www.digimorph.org /specimens/Gambelia_wislizenii   (534 words)

  
 Sexual Dimorphism of the Leopard Lizards   (Site not responding. Last check: 2007-10-22)
Sexual dimorphism is a phenomenon that occurs among a variety of animal taxa, and its occurrence can reflect and\or influence crucial aspects of the natural history of organisms.
sila are members of the family Crotaphytidae which is one of nine currently recognized iguanian lizard families (Frost and Etheridge, 1989).
Gambelia sila, the blunt-nosed leopard lizard, shows the ancestral iguanian condition of sexual dimorphism in that the territorial male is usually larger and has a more robust head than the female (Montanucci, 1965; Stebbins, 1985).
www-mcnair.berkeley.edu /97journal/Swinney.html   (2970 words)

  
 Crotaphytidae Encyclopedia Article, Definition, History, Biography   (Site not responding. Last check: 2007-10-22)
Looking For crotaphytidae - Find crotaphytidae and more at Lycos Search.
Find crotaphytidae - Your relevant result is a click away!
Look for crotaphytidae - Find crotaphytidae at one of the best sites the Internet has to offer!
www.karr.net /search/encyclopedia/Crotaphytidae   (141 words)

  
 ADW: Crotaphytidae: Information
Until recently, almost 1,000 species, including those in Crotaphytidae, were placed in Iguanidae (sensu lato), but Frost and Etheridge's (1989) analysis of iguanian systematics suggested eight monophyletic clades within that large family.
They proposed new family status for these eight clades, including Crotaphytidae (and a much reduced Iguanidae (sensu stricto).
Most researchers agree that the iguanian families that were not previously members of Iguanidae -- Agamidae and Chamaeleonidae -- form the monophyletic group Acrodonta, which is sister to the remaining families (equivalent to Iguanidae sensu lato, of which Crotaphytidae is a member).
animaldiversity.ummz.umich.edu /site/accounts/information/Crotaphytidae.html   (812 words)

  
 Snakes of Arkansas: Galleries - Galleries > Lizards > Crotaphytidae - Collared and Leopard Lizards
Snakes of Arkansas: Galleries - Galleries > Lizards > Crotaphytidae - Collared and Leopard Lizards
Galleries > Lizards > Crotaphytidae - Collared and Leopard Lizards
Large, fast, and leery; Males more greenish with yellow chin; Females more tan; Body with white specks and faint orange-red crossbars; Two dark bars form "collar"; Juveniles similar to adult females, but with more prominent, though broken, red crossbands
www.snakesofarkansas.com /galleries/index.php?cat=16   (82 words)

  
 Collard Lizards Reptile House
They have since been placed in the genus Gambelia.
In 1989 Frost and Etheridge put these two genera in the iguanian family Crotaphytidae.
With the discovery of new species, scientific names of collared lizards have changed many times.
www.reptileallsorts.com /colliz-cs.htm   (3619 words)

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