Hi Lucia. It looks like *D. asmetricus*, characterized by five slender rays in which the angles between adjacent rays are not equal. Do you know the chronological range of the sample? I'm sending you a paper with some discoasters i've studied in SW Atlantic. It is in Portuguese but has good images. I hope it helps. Sincerely, André Gatto. Em qui., 20 de abr. de 2023 às 09:43, lucia rivas <luciarivas168 at hotmail.com> escreveu: > Hi all, > I am studying nannofossils from the southwest Atlantic ocean and I found > this Discoaster. Does anyone have any idea what species it could be? > > Cheers, > Lucía > > _______________________________________________ > 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/20230507/98ea97c5/attachment.htm> -------------- next part -------------- A non-text attachment was scrubbed... Name: 31230-81100-1-SM.pdf Type: application/pdf Size: 1740750 bytes Desc: not available URL: <http://webmail.fcnym.unlp.edu.ar/pipermail/coccoliths/attachments/20230507/98ea97c5/attachment.pdf>