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Fossil specimen : BGS GSM31742 – Undifferentiated Type

Taxonomic Group

Kingdom Animalia

  Phylum Arthropoda

    Class Trilobita

      Order Phacopida

Fossil Name Gravicalymene quadrata (King)
Type Status Undifferentiated Type
Name History

Gravicalymene quadrata (King)

Flexicalymene quadrata (King)

Registration No. GSM31742
Collector Survey 1919
Donor or Associated Person Name not available
Held By British Geological Survey Logo British Geological Survey
Country Wales
Locality Craig Fawr, near Blaen-y-cwm, Montgomeryshire
Grid Reference Not available
Rock Unit Ashgill Formation
Biozone Not available
Geological Age

Hirnantian Age (Ordovician Period) – Rawtheyan Stage (Ordovician Period) (443.8 – 447 Ma B.P.)


King 1923 QJGS Vol 74, ibid Page 504 pl 26 fig 1

Price 1982 Geol. Mag. 119/1 Page 59 pl 1 figs 1 & 8

Available Images

High resolution photographs


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Steroscopic photographs


4648 KB


3582 KB

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