GB3D Type Fossils

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Fossil specimen : BGS GSM12439 – Lectotype

Taxonomic Group

Kingdom Animalia

  Phylum Mollusca

    Class Bivalvia

      Order -

Fossil Name Cleionychia transversa (Portlock)
Type Status Lectotype
Name History

Cleionychia transversa (Portlock)

Ambonychia (Inoceramus) transversa Portlock

Registration No. GSM12439
Collector Portlock
Donor or Associated Person Name not available
Held By British Geological Survey Logo British Geological Survey
Country Northern Ireland
Locality Desertcreat, Caradoc
Grid Reference Not available
Rock Unit Caradoc Rocks (Undifferentiated)
Biozone Not available
Geological Age

Caradoc Series (Ordovician Period) (449 – 458.4 Ma B.P.)

[Closest ICS interval: Late Ordovician Epoch ]


Portlock 1843 Geol of Londonderry and parts of Tyrone and Fernanagh p.423 pl. 33 fig. 11

Reed 1952 Proc Roy Irish Acad 55 B No 3 p.77 pl. 4 fig 9

Tunnicliff 1982 Pal Vol 25 Part 1 p.73 pl. 12 fig 1

Available Images

High resolution photographs


3488 KB


4244 KB

Steroscopic photographs


3125 KB


4741 KB

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3D Scans

1: bracket /BGS/GSM_12439

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