aplomado Posted January 3, 2019 Share Posted January 3, 2019 I am not aware of any other non-fish vertebrate fossil that is easily available fully articulated (correct me if I am wrong!) Why? What is so special about the Keichousaurus from China? Articulated reptiles seem to extremely rare, and yet there appears to be a enormous exception for the Keichousaurus! Link to comment Share on other sites More sharing options...
Fossildude19 Posted January 3, 2019 Share Posted January 3, 2019 Fossilization is about the conditions of the area at the time the creatures get buried. For good preservation of articulated specimens, you need a low energy, bacteria/scavenger free deposition. Pretty rare occurences. Black shales, mudstones, limestones, are indicative of an oxygen free or depleted environment. Usually these occur in deep lakes, or shallow lagoons/swamps. It is just a matter of luck that the formation these come from was such an environment. These PDFs may shed some light on their depositional environment. LINK 1 LINK 2 7 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Miocene_Mason Posted January 3, 2019 Share Posted January 3, 2019 5 hours ago, aplomado said: I am not aware of any other non-fish vertebrate fossil that is easily available fully articulated (correct me if I am wrong!) Apateon and it’s kin are easily available if you know where to look, and usually articulated. I have a few sent by a friend. 1 “...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin Happy hunting, Mason Link to comment Share on other sites More sharing options...
aplomado Posted January 4, 2019 Author Share Posted January 4, 2019 19 hours ago, WhodamanHD said: Apateon and it’s kin are easily available if you know where to look, and usually articulated. I have a few sent by a friend. You are right! Link to comment Share on other sites More sharing options...
MarielleK Posted April 2, 2019 Share Posted April 2, 2019 Thank you for asking this question, it was something I was wondering about as well. Link to comment Share on other sites More sharing options...
siteseer Posted April 25, 2019 Share Posted April 25, 2019 On 1/3/2019 at 12:36 PM, WhodamanHD said: Apateon and it’s kin are easily available if you know where to look, and usually articulated. I have a few sent by a friend. Right, and back in the 80's to maybe early 90's, numerous skeletons of Mesosaurus (Early Permian of Brazil) were available for sale and a number of those were also beautifully intact. Sometimes, an artful preparator dug out a limb or two (pressed against and underneath) and repositioned it to make the specimen more saleable. The Brazilian government stopped export of fossils sometime in the 90's. Some Triassic pachypleurosaur skeletons from Switzerland were also for sale during the 80's. 2 Link to comment Share on other sites More sharing options...
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