Fossil specimen : BGS GSM12833 – Lectotype
| Taxonomic Group |
Kingdom Animalia Phylum Arthropoda Class Trilobita Order Asaphida |
|---|---|
| Fossil Name | Opsimasaphus radiatus (Salter) |
| Type Status | Lectotype |
| Name History | Opsimasaphus radiatus (Salter) |
| Registration No. | GSM12833 |
|---|---|
| Collector | n/k |
| Donor or Associated Person | Name not available |
| Held By |
 British Geological Survey
|
| Comments |
| Country | Wales |
|---|---|
| Locality | Hendre-wen, Cerrig y Druidion,Denbighshire |
| Grid Reference | Not available |
| Rock Unit | Ashgill Formation |
|---|---|
| Biozone | Not available |
| Geological Age |
Hirnantian Age (Ordovician Period) – Rawtheyan Stage (Ordovician Period) (443.8 – 447 Ma B.P.) |
| References | HB.Whittington,1965 Pal. Soc. Mon. "Ord. Tril. Bala" pt.III pl. XXIV,fig. 9-10 Ingham Pal. Soc. Mon. 1970 pg. 18 J. C. Harper, 1952, Sc. Proc. Roy. Dublin Soc. vol. 26(NS) no. 4 pg. 109 Probably 12833 and possibly 12834 used by Salter to ilustrate Mem. Geol. Surv. vol. III(1866)Salter 1866, Mon. Brit. Trilobites etc. Palaeont. Soc pl. 23,fig. 7 Salter 1866, Mon. Brit. Trilobites etc. Palaeont. Soc pl.XVIII,fig. 3 |
|---|
Available Images
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/BGS/P813049.JP2
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/BGS/P813930.JP2
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1: /BGS/GSM_12833
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