tag:blogger.com,1999:blog-3927143376177050152.post2636795496434868625..comments2024-03-17T15:39:40.524-04:00Comments on Louisville Fossils and Beyond: Mucrospirifer thedforensis BrachiopodMichael Popphttp://www.blogger.com/profile/16741723962997816729noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-3927143376177050152.post-87094678368646524812010-10-02T23:34:32.865-04:002010-10-02T23:34:32.865-04:00Which is the upper surface, the one with the fold ...Which is the upper surface, the one with the fold or the sulcus?My donkeyhttps://www.blogger.com/profile/12448456944711235695noreply@blogger.com