Fossil specimen : SM E 3600 - E 3601 – Syntype
| Taxonomic Group |
Kingdom Animalia Phylum Arthropoda Class Trilobita Order Proetida |
|---|---|
| Fossil Name | Proetus (Semiproetus) twistonensis Reed |
| Type Status | Syntype |
| Name History | Proetus (Semiproetus) twistonensis Reed: Syntype Phillipsia eichwaldi (Fischer) |
| Registration No. | E 3600 - E 3601 |
|---|---|
| Collector | Name not available |
| Donor or Associated Person | Aitken |
| Held By |
 Sedgwick Museum of Earth Sciences, University of Cambridge
|
| Comments | block(s) |
| Country | England |
|---|---|
| Locality | Twiston, Lancashire, England |
| Grid Reference | Not available |
| Rock Unit | Carboniferous Limestone |
|---|---|
| Biozone | Not available |
| Geological Age |
Visean Stage (Carboniferous Period) – Tournaisian Stage (Carboniferous Period) (329 – 358.9 Ma B.P.) |
| References | Reed, F.R.C. 1943. Annals and Magazine of Natural History ser. (11) vol. x (2): p.61 |
|---|
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