Fossil specimen : SM A 4692 – Lectotype
| Taxonomic Group |
Kingdom Animalia Phylum Hemichordata Class Graptolithina Order - |
|---|---|
| Fossil Name | Callograptus radiatus Hopkinson |
| Type Status | Lectotype |
| Name History | Callograptus radiatus Hopkinson: Lectotype Callograptus radiatus Hopkinson: Syntype |
| Registration No. | A 4692 |
|---|---|
| Collector | Hopkinson, J. |
| Donor or Associated Person | Name not available |
| Held By |
 Sedgwick Museum of Earth Sciences, University of Cambridge
|
| Comments | part and counterpart : (parts a-b) |
| Country | Wales |
|---|---|
| Locality | Trwyn-hyrddyn (from the creek N.), Whitesand Bay, Pembrokeshire, Wales |
| Grid Reference | Not available |
| Rock Unit | Lower Arenig |
|---|---|
| Biozone | D. extensus (prob upper part) |
| Geological Age |
Arenig Series (Ordovician Period) (465.5 – 477.7 Ma B.P.) [Closest ICS interval: Mid Ordovician Epoch – Early Ordovician Epoch ] |
| References | Bulman, O.M.B. 1934. A monograph of British dendroid Graptolites Palaeontographical Society Monographs (2): p.86 pl. vii fig.5 Bulman, O.M.B. 1934. A monograph of British dendroid Graptolites Palaeontographical Society Monographs (3): p.86 pl. viii fig.6 Hopkinson & Lapworth 1875. Quarterly Journal of the Geological Society of London vol. xxxi (1): p.665 pl. xxxvi fig.8 a |
|---|
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