Fossil specimen : SM A 18295 – Syntype
| Taxonomic Group |
Kingdom Animalia Phylum Hemichordata Class Graptolithina Order Graptoloidea |
|---|---|
| Fossil Name | Didymograptus murchisoni var. geminus (Hisinger) |
| Type Status | Syntype |
| Name History | Didymograptus murchisoni var. geminus (Hisinger) Didymograptus furcillatus Lapworth: Syntype |
| Registration No. | A 18295 |
|---|---|
| Collector | Name not available |
| Donor or Associated Person | Hopkinson, John (1844-1919) |
| Held By |
 Sedgwick Museum of Earth Sciences, University of Cambridge
|
| Comments |
| Country | Wales |
|---|---|
| Locality | Abereiddy Bay, St. David's, Pembrokeshire, Wales |
| Grid Reference | Not available |
| Rock Unit | Lower Llandeilo (lower zone) |
|---|---|
| Biozone | D. murchisoni |
| Geological Age |
Llandeilian Stage (Ordovician Period) (458.4 – 460.5 Ma B.P.) [Closest ICS interval: Darriwilian Age ] |
| References | Elles & Wood 1901. A monograph of British Graptolites Palaeontographical Society Monographs (2): p.40 pl. iii fig.2 j Hopkinson & Lapworth 1875. Quarterly Journal of the Geological Society of London vol. xxxi (1): p.649 pl. xxxv fig.3 b |
|---|
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