Mainefossils Posted February 27, 2021 Share Posted February 27, 2021 Fossil forum, These are specimens from the Leighton Fm. They are all located on the same block. I believe that the specimens I have taken pictures of are of the same species, but don't know what species. All the available literature I have looked at has not identified the genus. Any help with the genus, and maybe even the species, would be greatly appreciated. Here are some pictures of them (internal molds on the left, external on the right): 2 The more I learn, the more I find that I know nothing. Regards, Asher Link to comment Share on other sites More sharing options...
Fossildude19 Posted February 27, 2021 Share Posted February 27, 2021 @Mainefossils These look like some kind of Rhynchonellida, to me. @Tidgy's Dad Maybe have a look through THIS PDF. Have a look at Plate # 12 and Plate # 13. 3 1 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...
Mainefossils Posted February 27, 2021 Author Share Posted February 27, 2021 Thanks so much for the paper! I have been looking for it, and haven't found a copy I could open, so this is great. Rhychonellid makes sense - is serial grinding the only way to establish the genus and species? 1 The more I learn, the more I find that I know nothing. Regards, Asher Link to comment Share on other sites More sharing options...
Fossildude19 Posted February 27, 2021 Share Posted February 27, 2021 Unfortunately, I don't really know. 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...
Misha Posted February 27, 2021 Share Posted February 27, 2021 Wow! Those are gorgeous, they look a bit squished but the detail is wonderful! 1 Link to comment Share on other sites More sharing options...
Mainefossils Posted February 27, 2021 Author Share Posted February 27, 2021 29 minutes ago, Misha said: Wow! Those are gorgeous, they look a bit squished but the detail is wonderful! Thanks! The more I learn, the more I find that I know nothing. Regards, Asher Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted February 27, 2021 Share Posted February 27, 2021 Definitely rhynchonellids. "Camarotoechia" leightoni would be my guess. 2 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Mainefossils Posted February 27, 2021 Author Share Posted February 27, 2021 19 minutes ago, Tidgy's Dad said: Definitely rhynchonellids. "Camarotoechia" leightoni would be my guess. Thanks! It's funny, I was looking at that species in two papers (https://digitalmaine.com/cgi/viewcontent.cgi?article=1575&context=mgs_publications, https://repository.si.edu/bitstream/handle/10088/14399/1/USNMP-45_1985_1913.pdf), but I thought that the ribs were too closely spaced. The squished forms really threw me off. Thanks again! The more I learn, the more I find that I know nothing. Regards, Asher Link to comment Share on other sites More sharing options...
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