Hi Marcie That is almost certainly a Ceratolithus planolith heterococcolith - see https://www.mikrotax.org/Nannotax3/cenozoic/Ceratolithus_cristatus_HET cheers Jeremy > On 11 Oct 2023, at 20:19, Marcie Purkey Phillips <marciepurkey at gmail.com> wrote: > > ⚠ Caution: External sender > > > Greetings! > > I am working on some Pleistocene samples from the Gulf of Mexico, and I am struggling to accurately identify this nanno (pictures attached). The magnification is 1000x, and the specimen is the large, thin ring to the bottom right of the cross-hairs. I won’t bias your interpretation by telling you what I think. Thank you all very much! > > <image0.jpeg> > <image1.jpeg> > <image2.jpeg> > <image3.jpeg> > > > Best, > Marcie > _______________________________________________ > Coccoliths mailing list > Coccoliths at fcnym.unlp.edu.ar > https://webmail.fcnym.unlp.edu.ar/mailman/listinfo/coccoliths -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://webmail.fcnym.unlp.edu.ar/pipermail/coccoliths/attachments/20231011/d51d23e8/attachment.htm> -------------- next part -------------- A non-text attachment was scrubbed... Name: favicon.ico Type: image/vnd.microsoft.icon Size: 15086 bytes Desc: not available URL: <http://webmail.fcnym.unlp.edu.ar/pipermail/coccoliths/attachments/20231011/d51d23e8/attachment.ico> -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 1484 bytes Desc: not available URL: <http://webmail.fcnym.unlp.edu.ar/pipermail/coccoliths/attachments/20231011/d51d23e8/attachment.bin>