Calcidiscus gallagheri

Distinguishing features: Larger weakly elliptical Calcidiscus species with clearly elliptical central area, opening spanned by a perforated plate.

Taxonomy:

Farinacci & Howe catalog pages: Calcidiscus gallagheri [no catalog entry yet]

Distinguishing features: Larger weakly elliptical Calcidiscus species with clearly elliptical central area, opening spanned by a perforated plate.

Geological Range:
Last occurrence (top): within NP25 zone (24.40-26.84Ma, top in Chattian stage). Data source: da Gama & Varol 2013
First occurrence (base): within NP25 zone (24.40-26.84Ma, base in Chattian stage). Data source: da Gama & Varol 2013

Plot of occurrence data:

• Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
• Triangles indicate an event for which a precise placement has been suggested
• (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: C. leptoporus group

Calcidiscus gallagheri compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 17-10-2018 Taxon Search: Advanced Search Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=176Go to Archive.is to create a permanent copy of this page - citation notes

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David Bord (ALS, US)

I notice you put the first occurrence at NP5, but da Gama & Varol 2013 restrict this species to NP25. Is this a mistake or have you heard differently?

15th April 2015 3:34pm

Jeremy Young (UCL, UK)

thanks Dave that was typo of mine - I'll correct it!

15th April 2015 10:33pm

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