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Fossil specimen : BGS GSM37926 – Syntype

Taxonomic Group

Kingdom Animalia

  Phylum Mollusca

    Class Cephalopoda

      Order Ammonitida

Fossil Name Gastrioceras? sigma Wright
Type Status Syntype
Name History

Gastrioceras? sigma Wright

Registration No. GSM37926
Collector survey 1924
Donor or Associated Person Name not available
Held By British Geological Survey Logo British Geological Survey
Comments Formerly SH 3089.R2 Reticuloceras reticulatum superbilingue,G sigma bed 3'-10' above the y bed
Country England
Locality NE of Higher Hempshaws,W of Belmont Lancashire
Grid Reference Not available
Rock Unit Millstone Grit Group
Biozone Not available
Geological Age

Namurian Stage (Carboniferous Period) (313 – 326.4 Ma B.P.)

[Closest ICS interval: Bashkirian Age – Serpukhovian Age ]


Wright 1926 Summer Prog for 1925 p.197-198

Wright 1927 Geology of Rossendale Mem Geol Surv p.116

Available Images

High resolution photographs


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Steroscopic photographs


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