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VENOMOUS SNAKES- how old
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by martyn on August 18, 2004
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hi you peaple are really good i know you are you have helped me before and are quik, you are all interested in venomous snakes but i need to know how old venomous snakes are especailly rattle snakes and cobras. how long have they been on this earth. thanks you guys are great please reply.
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RE: VENOMOUS SNAKES- how old
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by MattHarris on August 19, 2004
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Dr. Wuster can probably tell you off the top of his head, but I don't have it memorized (I still have trouble remembering when the late Cretaceous was relative to the closing of the Central American land bridge!)
but this paper is excellent at determining an evolutionary clock of snake speciation.
http://biology.bangor.ac.uk/%7Ebss166/Publications/Biology_of_the_Vipers.pdf
I strongly recommend you download it and read it.
Matt
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RE: VENOMOUS SNAKES- how old
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by martyn on August 19, 2004
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thank you mattharris i ve downloaded it but it seems to be writtin in code i don t understand it thank you for the info though , its hard theres not much about rattle snakes evalution on the net or cobra evalution. please anyone with any idea help me on the subject help .
thank you for the info you gave me mattharris this is a hard subject .
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You need Adobe Acrobat....sorry.
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by MattHarris on August 19, 2004
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You can downloaded the Adobe Reader for free. Simply do a websearch. I assumed you already had it as most people do.
There are excellent diagrams in there on pitviper evolution.
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RE: VENOMOUS SNAKES- how old
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by paleoherp on August 19, 2004
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martyn your questions are about snakes of the past i hope this helps if you get to read it . rattle snakes seem to have a fossil record from the late pleistocene which is nt long ago. the name of these fossils are crotalus potterensis and giganteus and reliquis (which is actually a plant fossil) cobra fossils have been found in rock sediments from the miocene epoch which is about 23 million years ago.
i hope this helps . you should read the encyclopedia of paleoherpetology (snakes).
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