Fossil specimen : SM A 46902 – Holotype
| Taxonomic Group |
Kingdom Animalia Phylum Arthropoda Class Trilobita Order Asaphida |
|---|---|
| Fossil Name | Marrolithus magnificus MacGregor |
| Type Status | Holotype |
| Name History | Marrolithus magnificus MacGregor: Holotype |
| Registration No. | A 46902 |
|---|---|
| Collector | Name not available |
| Donor or Associated Person | MacGregor, A.R. |
| Held By |
 Sedgwick Museum of Earth Sciences, University of Cambridge
|
| Comments |
| Country | Wales |
|---|---|
| Locality | Plas-yn-glyn, Llanrhaiadr-ym-Mochnant, Montgomeryshire, Wales |
| Grid Reference | Not available |
| Rock Unit | Calcareous Shale |
|---|---|
| Biozone | Not available |
| Geological Age |
Llandeilian Stage (Ordovician Period) (458.4 – 460.5 Ma B.P.) [Closest ICS interval: Darriwilian Age ] |
| References | MacGregor 1963. Palaeontology vol. v (1): p.801 pl.117 fig.1 (a.46, 902b) |
|---|
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