[coccoliths] Nannolith inc sed

[Young, Jeremy]

I agree with Michael, it seems a bit wrong for furcatus - too large, too flat, ridges too strong and bifurcations look different. I wonder if it might be a Lithostromation - it is the right age and they seen to be very variable in morphology

Jeremy Young
Earth Sciences, UCL
Sent from thumb driven device so  typing may be a bit adrift

On 28 Nov 2017, at 12:55, "Michael Wagreich" <michael.wagreich at univie.ac.at<mailto:michael.wagreich at univie.ac.at>> wrote:

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<mailto: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

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