kolleamm Posted October 26, 2010 Share Posted October 26, 2010 I found this today,I just finished prepping it and hardening it with Elmers glue, its a late cretaceous gastropod from Southern California, can someone help me ID it please? Link to comment Share on other sites More sharing options...
kolleamm Posted October 26, 2010 Author Share Posted October 26, 2010 . Link to comment Share on other sites More sharing options...
frozen_turkey Posted October 26, 2010 Share Posted October 26, 2010 I found this today,I just finished prepping it and hardening it with Elmers glue, its a late cretaceous gastropod from Southern California, can someone help me ID it please? I might be wrong, but isnt elmers bad for fossils? I read some were that after awhile it will turn form like a milky film and since its water based it will expaned and contract with the temp/humidity thus weakening the fossil? Just wondering. -Frozen Link to comment Share on other sites More sharing options...
Geodigger Posted October 26, 2010 Share Posted October 26, 2010 I have seen similar gastropods from the Late Cretaceous of British Columbia, Canada. I'm pretty sure you have the aporrhaid gastropod Anchura. Hope that helps. Link to comment Share on other sites More sharing options...
erose Posted October 26, 2010 Share Posted October 26, 2010 I have seen similar gastropods from the Late Cretaceous of British Columbia, Canada. I'm pretty sure you have the aporrhaid gastropod Anchura. Hope that helps. There are a whole bunch of "Anchuras" here in Texas and it looks good to be one. Here we generally find mostly internal molds without that great shell detail. The different species and sub-genera have various numbers and shapes of those extended "wings." You will need to figure out the formation it is from and then look into known species for that formation or nearby equivalents. You probably have enough there to ID to species level if you can find the needed papers or books. As mentioned Elmers is questionable. There are lots of old threads on this forum on best techniques to look up. Link to comment Share on other sites More sharing options...
kolleamm Posted October 26, 2010 Author Share Posted October 26, 2010 I might be wrong, but isnt elmers bad for fossils? I read some were that after awhile it will turn form like a milky film and since its water based it will expaned and contract with the temp/humidity thus weakening the fossil? Just wondering. -Frozen You might be right, I should really look into it thanks for the heads up. Link to comment Share on other sites More sharing options...
kolleamm Posted October 26, 2010 Author Share Posted October 26, 2010 I have seen similar gastropods from the Late Cretaceous of British Columbia, Canada. I'm pretty sure you have the aporrhaid gastropod Anchura. Hope that helps. I think that might be it,thanks for the help! Link to comment Share on other sites More sharing options...
kolleamm Posted October 26, 2010 Author Share Posted October 26, 2010 I found this great site for identifying gastropods http://www.stromboidea.de/?n=Collections.NaturalHistoryMuseum After looking through the specimens I realize mine could be an Anchura but it might actually be an Aporrhais due to the direction the spike is pointing, what do you think? first picture is of Anchura, next of Aporrhais . Link to comment Share on other sites More sharing options...
Han Posted October 27, 2010 Share Posted October 27, 2010 Dear fossil friends, It is an Anchura as some of you already mentioned. Some of them are described by Stephenson, Wade, Conrad and others. One of the most recent works about the Aporrhaid genus Anchura is from Elder and Saul, 1996. It is important where the fossil is found and what stage of the Cretaceous (Maastrichtian, Campanian) and what substage (Upper/ Lower. Also try to find out the zonatian, for example the Ornate ammonite zonation, the Baculitid zonation both after Matsumoto, 1960 or the Turritella zonation (Saul, 1983). For more information have a look at: Elder W.P. & Saul L.R. (1996) - Taxonomy and Biostratigraphy of Coniacian through Maastrichtian Anchura of the North American Slope. If you want I can send this publication by mail. Have also a look on our site: http://www.stromboidea.de/?n=Species.Anchura Attached Anchura haydeni regards, Han Link to comment Share on other sites More sharing options...
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