Fossil specimen : SM A 502 – Syntype
| Taxonomic Group |
Kingdom Animalia Phylum Arthropoda Class Trilobita Order Ptychopariida |
|---|---|
| Fossil Name | Sphaerophthalmus expansus |
| Type Status | Syntype |
| Name History | Sphaerophthalmus expansus Olenus expansus Ctenopyge expansa Salter Olenus (Sphaerophthalmus) expansus: Syntype |
| Registration No. | A 502 |
|---|---|
| Collector | Name not available |
| Donor or Associated Person | Name not available |
| Held By |
 Sedgwick Museum of Earth Sciences, University of Cambridge
|
| Comments |
| Country | Wales |
|---|---|
| Locality | Moel Gron, Merionethshire, Wales |
| Grid Reference | Not available |
| Rock Unit | Upper Lingula Flag |
|---|---|
| Biozone | Not available |
| Geological Age |
Merioneth Series (Cambrian Period) – St David's Series (Cambrian Period) (485.4 – 508 Ma B.P.) [Closest ICS interval: Furongian Epoch – Cambrian Series 3 ] |
| References | Lake 1913 a. A monograph of the British Cambrian Trilobites Palaeontographical Society Monographs pt. iv (2): p.87 pl. x fig.8 Reed, F.R.C. 1900 b. Geological Magazine dec. 4 vol. vii (3): p.306 pl. xii figs.2, 3 Salter 1873. Catalogue of the Cambrian and Silurian fossils contained in the Geological Museum of the University of Cambridge (1): p.12 |
|---|
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