Rockwood Posted October 25, 2018 Share Posted October 25, 2018 What life form caused the pattern of deformation seen in this gastropod. Five points each for Kingdom, Class, and Family. hint: It was found on the shore of a lake in Maine. Link to comment Share on other sites More sharing options...
abyssunder Posted October 25, 2018 Share Posted October 25, 2018 maybe freshwater sabellid polychaetes (Annelida: Sabellidae), like Caobangia billeti ? 1 " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
doushantuo Posted October 25, 2018 Share Posted October 25, 2018 ichnotaxonomically speaking,that would be Oichnus. But i realize that's NOT the question edit: if Abyssunder is right(and i think he is),Polydorichnus would perhaps be the better designation images from:McDiarmid et al:THE ECOLOGY OF POLYCHAETES THAT INFEST ABALONE SHELLS IN VICTORIA, AUSTRALIA/Journ.Shellfish Res./2004/v.23-4) LINK to J. Paleont., 81(6), 2007, pp. 1466–1475 SPIONID BORE HOLE POLYDORICHNUS SUBAPICALIS NEW ICHNOGENUS AND ICHNOSPECIES: A NEW BEHAVIORAL TRACE IN GASTROPOD SHELLS MAKIKO ISHIKAWA1 AND TOMOKI KASE2 1Department of Geology, National Science Museum, 3-23-1 Hyakunincho, Shinjuku-ku, Tokyo 169-0073, Japan, maki@kahaku.go.jp, and 2kase@kahaku.go.jp 2 Link to comment Share on other sites More sharing options...
caldigger Posted October 26, 2018 Share Posted October 26, 2018 What's the prize for getting it right? Link to comment Share on other sites More sharing options...
Rockwood Posted October 26, 2018 Author Share Posted October 26, 2018 29 minutes ago, caldigger said: What's the prize for getting it right? 15 points The total now is 5. Edited Another clue in the AM. Link to comment Share on other sites More sharing options...
Rockwood Posted October 26, 2018 Author Share Posted October 26, 2018 Clue: I was able to determine the cause by it's involuntary association with an arthropod. Link to comment Share on other sites More sharing options...
Rockwood Posted October 26, 2018 Author Share Posted October 26, 2018 The class is Mamalia Family, Mustelidae. It's actually more coprolite related. It rolled out of river otter excrement when I prodded it. The stuff is quite distinctive because it is often nearly pure crayfish shell. 1 Link to comment Share on other sites More sharing options...
Max-fossils Posted October 27, 2018 Share Posted October 27, 2018 That's pretty cool! If you need an ID on the shell itself, it's not a marine gastropod, but looks more like something along the lines of Planorbis or so. That's about all I can add to the topic Max Derème "I feel an echo of the lightning each time I find a fossil. [...] That is why I am a hunter: to feel that bolt of lightning every day." - Mary Anning >< Remarkable Creatures, Tracy Chevalier Instagram: @world_of_fossils Link to comment Share on other sites More sharing options...
Coco Posted October 27, 2018 Share Posted October 27, 2018 I am OK with Planorbis or of its family. Coco ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
daves64 Posted October 27, 2018 Share Posted October 27, 2018 20 hours ago, Rockwood said: The class is Mamalia Family, Mustelidae. It's actually more coprolite related. It rolled out of river otter excrement when I prodded it. The stuff is quite distinctive because it is often nearly pure crayfish shell. So you're saying it's a crappy shell.. Accomplishing the impossible means only that the boss will add it to your regular duties. Link to comment Share on other sites More sharing options...
Rockwood Posted October 27, 2018 Author Share Posted October 27, 2018 1 hour ago, Coco said: I am OK with Planorbis or of its family. Coco Apparently this one is known to otters as the pill snail. Link to comment Share on other sites More sharing options...
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