Hi Everyone, I’m writing as I’m having difficulty identifying a few specimens from a site in Central Thailand. I believe that Undet 2 and 3 are the same species but slightly different in shape. Undet 8 was difficult to photograph because of the poor preservation, however, they are teardrop in shape with a rugose surface structure and there are quite a few of them! I’d appreciate any help you might be able to offer. Jade d’Alpoim Guedes Assistant Professor Department of Anthropology Scripps Institution of Oceanography University of California San Diego Affiliated Researcher- Center for Climate Change Impacts and Adaptation- Scripps Institution of Oceanography https://scripps.ucsd.edu/centers/adaptation/ Mailing Address at Scripps: Scripps Institution of Oceanography-Sverdrup Hall 8615 Kennel Way Rm # 1255 La Jolla, CA 92037-0212 [log in to unmask] http://www.jadeguedes.com http://anthro.ucsd.edu/people/faculty/faculty-profiles/jade-guedes.html https://scripps.ucsd.edu/profiles/jguedes Find recent papers at Research Gate: https://www.researchgate.net/profile/Jade_Dalpoim_Guedes