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Fossil specimen : BGS GSM12423 – Syntype

Taxonomic Group

Kingdom Animalia

  Phylum Mollusca

    Class Bivalvia

      Order -

Fossil Name Deceptrix subtruncata (Portlock)
Type Status Syntype
Name History

Deceptrix subtruncata (Portlock)

Ctenodonta transversa (Portlock)

Arca transversa (Portlock)

Registration No. GSM12423
Collector Portlock
Donor or Associated Person Name not available
Held By British Geological Survey Logo British Geological Survey
Country Northern Ireland
Locality Desertcreight,Tyrone
Grid Reference Not available
Rock Unit Killey Bridge Formation
Biozone Not available
Geological Age

Cautleyan Stage (Ordovician Period) – Pusgillian Stage (Ordovician Period) (447 – 451 Ma B.P.)

[Closest ICS interval: Katian Age ]


?Portlock,1843,Geol. Rep. Londonderry,etc. pg. 428 as Arca transversa pl.XXX,IV,fig. 4

Reed,1952,Proc.Roy.Irish Acad.55, no.3 pg.63

Tunnicliff,1982,pal.v.25,pt. 1,pg.60-61 pl.9,fig. 9

Available Images

High resolution photographs


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Steroscopic photographs


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