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Fossil specimen : BGS GSM23110 – Holotype

Taxonomic Group

Kingdom Animalia

  Phylum Brachiopoda

    Class -

      Order -

Fossil Name Pterotheca transversa (Portlock)
Type Status Holotype
Name History

Pterotheca transversa (Portlock)

Atrypa transversa

Registration No. GSM23110
Collector Portlock
Donor or Associated Person Name not available
Held By British Geological Survey Logo British Geological Survey
Comments See Cocks, 1978 Pal Soc Mon Page 169 misquoted as 32110 Also Holotype by Monotypy
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 ]


A.F. Foerste, Mem Geol Surv Canada 138 1924 p.218-219

Cocks 1978 Pal Soc Mon p.169

J Brookes Knight "Palaeozoic Gastropod Genotypes" Geol. Soc. Amer. Special Papers No 32, 1941 p.283 pl 16 fig 3

Portlock 1843 Geol of Londonderry and parts of Tyrone and Fernanagh p.455

Reed 1952 Proc Roy Irish Acad 55 B No 3 p.92

Salter, Rep Brit Assoc for 1852 (1853) p.61

basis of specimen figd Salter in Murchison's Siluria 1st Edition 1854 Page 196 and subsequent editions fig 4 25

Available Images

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1: bracket /BGS/GSM_23110

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