GB3D Type Fossils

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Fossil specimen : BGS GSM26403 – Holotype

Taxonomic Group

Kingdom Animalia

  Phylum Mollusca

    Class Cephalopoda

      Order Ammonitida

Fossil Name Pleuroceras regulare (Simpson)
Type Status Holotype
Name History

Pleuroceras regulare (Simpson)

Registration No. GSM26403
Collector Name not available
Donor or Associated Person Clarkson 1913
Held By British Geological Survey Logo British Geological Survey
Comments Middle Lias (spinatum zone). 1" 35/44.
Country England
Locality Hawsker - Whitby - N Yorks.
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.)


Buckman SS 1913 Type Ammonites (as Paltopleuroceras regulare) plate 77

Howarth MK 1958 British Amaltheidae (as Pleuroceras solare (Phillips)) p.28-30

Howarth MK 1962 Palaeontology Vol 5 p.114

Simpson 1855 Fossils of the Yorkshire Lias (as Ammonites regularis) p.89

Simpson 1884 Fossils of the Yorkshire Lias p.127

Available Images

High resolution photographs


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Steroscopic photographs


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