. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. West Indian Xenodontine Colubrid Snakes ⢠Maglio 25 CO .CO ^ ^ 05 "co "^ -Q CO O O â "::: c: to 5q C o ^ -XT ^ C O -S CD to tu S2 .<o :3 to to .^ sirhynd macer CO :3 c: foricen cticruc, ersmai vent r is 'Hen sis 5l o O qj §g:g cx (o V, ^"^ ^^ 5. A Anguilla Bank e Great Bahama Bank c Cuba G Guadeloupe, Dominica GA Galapagos H Hispaniola Jamaica Nevis, St. Kitts, etc Puerto Rico St. Croix sA South America â oversea colonization Fig. 18. Suggested phyletic relationships between species of the can
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. West Indian Xenodontine Colubrid Snakes ⢠Maglio 25 CO .CO ^ ^ 05 "co "^ -Q CO O O â "::: c: to 5q C o ^ -XT ^ C O -S CD to tu S2 .<o :3 to to .^ sirhynd macer CO :3 c: foricen cticruc, ersmai vent r is 'Hen sis 5l o O qj §g:g cx (o V, ^"^ ^^ 5. A Anguilla Bank e Great Bahama Bank c Cuba G Guadeloupe, Dominica GA Galapagos H Hispaniola Jamaica Nevis, St. Kitts, etc Puerto Rico St. Croix sA South America â oversea colonization Fig. 18. Suggested phyletic relationships between species of the cantherigerus species assemblage and related genera. Short horizontal lines indicate proposed oversea colonizations. Geographic distributions as indicated by lettered symbols. species asseml)lage occurs on the Lesser Antilles south of Dominica. This in itself is not significant since, as Gorman and Atkins (1969) have shown for Anolis, colonization does not necessarily proceed sequentially island by island along the chain of the Lesser Antilles. Nevertheless, taken with the first line of evidence, this assumes more importance. The following zoogeographical histoiy for the genus AIsoplus may be suggested. The assemblage appears to have been de- rived from an ancestral species probably not unlike Alsophis canflwrigenis in its osteological, hemipenial, and external mor- phology. From this widely distributed ancestral group in South America (and probably Central America as well), a single trans-Caribbean colonization could have resulted in the establishment of this group. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
Size: 1662px × 1503px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorharvarduniversity, bookcentury1900, booksubjectzoology
