GB3D Type Fossils

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Fossil specimen : BGS GSM12435 – Holotype

Taxonomic Group

Kingdom Animalia

  Phylum Mollusca

    Class Bivalvia

      Order -

Fossil Name Vanuxemia? contorta (Portlock)
Type Status Holotype
Name History

Vanuxemia? contorta (Portlock)

Ambonychia contorta Sowerby

Inoceramus contortus

Registration No. GSM12435
Collector Portlock
Donor or Associated Person Name not available
Held By British Geological Survey Logo British Geological Survey
Country Northern Ireland
Locality Desertcreight,Tyrone,NI
Grid Reference Not available
Rock Unit Killey Bridge Formation
Biozone Not available
Geological Age

Cautleyan Stage (Ordovician Period) – Pusgillian Stage (Ordovician Period) (447 – 449 Ma B.P.)

[Closest ICS interval: Katian Age ]


Portlock,1843,Geol. Rep. Londonderry [as Inoceramus contortus]pg. 422 pl.XXXII,fig.5

Reed,1952,Proc.roy. Irish Acad. ,55,B,no. 3,op cit pp. 68-9 pl.III,fig. 12

Tunnicliff,1982,Pal. v. 25,pt1,pg. 70 pl. 13,fig. 4

Available Images

High resolution photographs


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Steroscopic photographs


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