GB3D Type Fossils

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Fossil specimen : BGS GSM47824 – Holotype

Taxonomic Group

Kingdom Animalia

  Phylum Mollusca

    Class Cephalopoda

      Order Ammonitida

Fossil Name Gyromegalites polygyralis Buckman S
Type Status Holotype
Name History

Gyromegalites polygyralis Buckman S – See Buckman (1925): Holotype

Registration No. GSM47824
Collector Name not available
Donor or Associated Person Buckman S 1927
Held By British Geological Survey Logo British Geological Survey
Comments Sandy bed below Cockly bed(= basal part of C&P s Cockly Bed)
Country England
Locality Okus Quarry - Swindon - Wilts.
Grid Reference Not available
Rock Unit Portland Group
Biozone Not available
Geological Age

Tithonian Age (Jurassic Period) (145 – 152.1 Ma B.P.)


Arkell. 1933. Jurassic System p.507

Buckman S. 1925. Type Ammonites, Vol VI pl.DCXX A B

Available Images

High resolution photographs


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Steroscopic photographs


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