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Fossil specimen : BGS GSM4744 – Holotype

Taxonomic Group

Kingdom Animalia

  Phylum Mollusca

    Class Cephalopoda

      Order Ammonitida

Fossil Name Proplanulites crassiruga (Buckman S)
Type Status Holotype
Name History

Proplanulites crassiruga (Buckman S)

Crassiplanulites crassiruga (Buckman S)

Registration No. GSM4744
Collector Name not available
Donor or Associated Person Holloway T 1893
Held By British Geological Survey Logo British Geological Survey
Comments 2'6" calc sandstone
Country England
Locality Somerford Parva Malmesbury Wiltshire
Grid Reference Not available
Rock Unit Kellaways Formation
Biozone calloviense
Geological Age

Callovian Age (Jurassic Period) (163.5 – 166.1 Ma B.P.)


Buckman S. 1921. Type Ammonites p.42 CCLIII

Woodward HB. 1895. Jurassic Rocks Britain. V p.30

Available Images

High resolution photographs


3822 KB


3569 KB


1645 KB


2035 KB

Steroscopic photographs


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4253 KB

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3D Scans

1: /BGS/GSM_4744

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