GB3D Type Fossils

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Fossil specimen : BGS GSM51458 – Holotype

Taxonomic Group

Kingdom Animalia

  Phylum Mollusca

    Class Cephalopoda

      Order Ammonitida

Fossil Name Microceras serpentinum Trueman & Williams
Type Status Holotype
Name History

Microceras serpentinum Trueman & Williams

Registration No. GSM51458
Collector Richardson, L.
Donor or Associated Person ex Richardson Collection 1931
Held By British Geological Survey Logo British Geological Survey
Comments Lower Lias (raricostatum zone).
Country England
Locality Railway cutting - Cheltenham - Glos.
Grid Reference Not available
Rock Unit Lias Group
Biozone Not available
Geological Age

Aalenian Age (Jurassic Period) – Rhaetian Age (Triassic Period) (170.3 – 209.5 Ma B.P.)


Trueman & Williams 1927 Proc Cotteswold Nat Field Club Vol XXII Part 3 plXXVII.,fig2

Available Images

High resolution photographs


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Steroscopic photographs


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