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Fossil specimen : BGS GSM26406 – Holotype

Taxonomic Group

Kingdom Animalia

  Phylum Mollusca

    Class Cephalopoda

      Order Ammonitida

Fossil Name Apoderoceras mutatum (Simpson)
Type Status Holotype
Name History

Apoderoceras mutatum (Simpson)

Registration No. GSM26406
Collector Name not available
Donor or Associated Person Clarkson,WB 1913
Held By British Geological Survey Logo British Geological Survey
Country England
Locality Whitby - N Yorks.
Grid Reference Not available
Rock Unit Lower Lias (Undifferentiated)
Biozone taylori
Geological Age

Pliensbachian Age (Jurassic Period) – Hettangian Age (Jurassic Period) (182.7 – 201.3 Ma B.P.)


Buckman SS 1914 Yorkshire Type Ammonites II pl CV

Howarth MK 1962 Palaeontology 5 p.109

Martin Simpson 1884 Fossils of the Yorkshire Lias 2nd Ed p.96

Martin Simpson 1942 Fossils of the Yorkshire Lias 3rd Ed p.96

Martin Simpson 1955 Fossils of the Yorkshire Lias 1st Ed p.63-64

Available Images

High resolution photographs


2912 KB

Steroscopic photographs


3612 KB

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3D Scans

1: /BGS/GSM_26406

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