Fossil specimen : SM A 568 – Holotype
| Taxonomic Group |
Kingdom Animalia Phylum Arthropoda Class Trilobita Order Asaphida |
|---|---|
| Fossil Name | Niobina davidis Lake |
| Type Status | Holotype |
| Name History | Niobina davidis Lake: Holotype Ogygia scutatrix Salter Ogygia scutatrix Salter |
| Registration No. | A 568 |
|---|---|
| Collector | Homfray, D. 1875 |
| Donor or Associated Person | Name not available |
| Held By |
 Sedgwick Museum of Earth Sciences, University of Cambridge
|
| Comments |
| Country | Wales |
|---|---|
| Locality | Tuhwntirbwlch (quarry), Tuntir-y-bwlch (quarry), Tu-hwnt-yr-bwlch (quarry), Portmadoc, Caernarvonshire, Wales |
| Grid Reference | Not available |
| Rock Unit | Middle Tremadoc |
|---|---|
| Biozone | Not available |
| Geological Age |
Tremadoc Series (Ordovician Period) (477.7 – 485.4 Ma B.P.) [Closest ICS interval: Tremadocian Age ] |
| References | Lake 1943. Geological Magazine vol. lxxx (3): p.139 pl. vii figs.1-3 Lake 1944. A monograph of the British Cambrian Trilobites Palaeontographical Society Monographs (4): p.334 pl. xlvii figs.1, 1 a |
|---|
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