AJ58 Posted May 21, 2019 Share Posted May 21, 2019 I found this gastropod in creek gravel northeast arkansas southern border of the ozark uplift.It appears to have a operculum [trap door].But it is unlike the common ceratopea.I need help with this fossil.Is it a trap door or a gastropod stuck inside another gastropod?Map is lower ordovician but I find different age fossils in this stream.Thanks. 1 Link to comment Share on other sites More sharing options...
fossilus Posted May 21, 2019 Share Posted May 21, 2019 I'm no expert, bit isn't an operculum flatish, somewhat round or oval in shape? Looks like another gastropod to me. Link to comment Share on other sites More sharing options...
Fossildude19 Posted May 21, 2019 Share Posted May 21, 2019 40 minutes ago, fossilus said: I'm no expert, bit isn't an operculum flatish, somewhat round or oval in shape? Looks like another gastropod to me. On the Ceratopea, they are unusual looking: However, for the OP's item, ... I would go with another gastropod inside a Ceratopea. 4 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...
FossilDAWG Posted May 21, 2019 Share Posted May 21, 2019 I agree with Tim, it's a high-spired gastropod stuck inside a Ceratopea. Pretty neat fossil. Don Link to comment Share on other sites More sharing options...
AJ58 Posted May 21, 2019 Author Share Posted May 21, 2019 Is ceratopea the operculum or the gastropod ? Link to comment Share on other sites More sharing options...
ynot Posted May 21, 2019 Share Posted May 21, 2019 44 minutes ago, AJ58 said: Is ceratopea the operculum or the gastropod ? Gastropod. But the operculum is a part of the snail, so would be a ceratpea operculum. However there is no operculum on the piece in question. Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
AJ58 Posted May 21, 2019 Author Share Posted May 21, 2019 55 minutes ago, ynot said: Gastropod. But the operculum is a part of the snail, so would be a ceratpea operculum. However there is no operculum on the piece in question. So the ceratopea operculum is not named?And I do agree that the fossil I have is a gastropod inside another gastropod.I have a large collection of operculum fossils but I don't know what to call them. Link to comment Share on other sites More sharing options...
ynot Posted May 21, 2019 Share Posted May 21, 2019 21 minutes ago, AJ58 said: So the ceratopea operculum is not named?And I do agree that the fossil I have is a gastropod inside another gastropod.I have a large collection of operculum fossils but I don't know what to call them. An operculum is part of a snail, just like a foot os part of Your body. Do You have a different name for Your foot, or do You just call it a foot? Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
AJ58 Posted May 21, 2019 Author Share Posted May 21, 2019 32 minutes ago, ynot said: An operculum is part of a snail, just like a foot os part of Your body. Do You have a different name for Your foot, or do You just call it a foot? Thanks that makes since .I do have more questions so I will start a topic on operclums in fossil discussion at a later date. Link to comment Share on other sites More sharing options...
Ludwigia Posted May 21, 2019 Share Posted May 21, 2019 Here's a photo of a Pliocene Astraea rugosa from Cyprus with its operculum in place. 3 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
AJ58 Posted May 21, 2019 Author Share Posted May 21, 2019 3 minutes ago, Ludwigia said: Here's a photo of a Pliocene Astraea rugosa from Cyprus with its operculum in place. That is a nice fossil.It is very different than the operculum that I find in Arkansas. Thanks for the post. 1 Link to comment Share on other sites More sharing options...
Mark Kmiecik Posted May 21, 2019 Share Posted May 21, 2019 1 hour ago, ynot said: An operculum is part of a snail, just like a foot os part of Your body. Do You have a different name for Your foot, or do You just call it a foot? The left is Bob and the right is Weave. Mark. Fossil hunting is easy -- they don't run away when you shoot at them! Link to comment Share on other sites More sharing options...
AJ58 Posted May 21, 2019 Author Share Posted May 21, 2019 28 minutes ago, Mark Kmiecik said: The left is Bob and the right is Weave. Link to comment Share on other sites More sharing options...
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