tag:blogger.com,1999:blog-1925453458905823877.post5589977060156308666..comments2024-01-09T19:56:03.647-05:00Comments on Freshwater Gastropods of North America: Marstonia letsoni, Quite Literally ObscureRob Dillonhttp://www.blogger.com/profile/09916618545870123585noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-1925453458905823877.post-84553637856105000442016-02-09T14:59:20.887-05:002016-02-09T14:59:20.887-05:00Hard to say what chalky is on specimens that small...Hard to say what chalky is on specimens that small (n=6). One is in a gel cap, perhaps F.C. looked at the anatomy? I don't know. I also don't know the collector. It's from Anson Hinkley and he traded with EVERYBODY.Kevin Cummingshttps://www.blogger.com/profile/00134772542080465882noreply@blogger.comtag:blogger.com,1999:blog-1925453458905823877.post-36502601676652085882016-02-08T12:10:35.951-05:002016-02-08T12:10:35.951-05:00That's interesting. I was quoting Berry (1943...That's interesting. I was quoting Berry (1943). So I'm guessing that your 1910 lot must have been collected by F. C. Baker, yes? Are they chalky? It's probably tough to tell at this point, but I wonder if that sample might be derived from a post-glacial deposit?Rob Dillonhttps://www.blogger.com/profile/09916618545870123585noreply@blogger.comtag:blogger.com,1999:blog-1925453458905823877.post-27717039996616484302016-02-08T11:58:47.476-05:002016-02-08T11:58:47.476-05:00I'm not sure how you have determined that &quo...I'm not sure how you have determined that " The first living specimens were not collected until 1943" We have a lot of Marstonia letsoni collected from "La Plaisance Bay" in Lake Erie, a stones throw from Lake St. Clair. around 1910-20.Kevin Cummingshttps://www.blogger.com/profile/00134772542080465882noreply@blogger.com