Dear Vladimir, I would not identify this as M. furcatus, it has somehow similar outline shape, but the internal structure (“keel” along rays; round “bulbs” or “holes” along rays) seems different – at least I have never seen such structures at a Cretaceous M. furcatus. What is with crossed nicols – all dark or? Michael Wagreich Von: Coccoliths [mailto:coccoliths-bounces at fcnym.unlp.edu.ar] Im Auftrag von ??????? ???????? Gesendet: Dienstag, 28. November 2017 11:28 An: Young, Jeremy; Coccoliths at fcnym.unlp.edu.ar Betreff: Re: [coccoliths] Nannolith inc sed Dear colleagues, very rarely there are nanoliths in the complexes, which I can not identify (see photo) - this is the zone of D. bisectus (late Bartonian). I will be very grateful for the answer. Vladimir --- Diese E-Mail wurde von Avast Antivirus-Software auf Viren geprüft. https://www.avast.com/antivirus -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://webmail.fcnym.unlp.edu.ar/pipermail/coccoliths/attachments/20171128/178ebf4f/attachment.html>