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
|
| 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 ] |
| References | 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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/BGS/P827040.JP2
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Steroscopic photographs
/BGS/P827717.JP2
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1: bracket /BGS/GSM_23110
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