| Registration No. : |
GSM 103545 . |
Type : |
Not Designated a Type |
| Identifications : |
| New: |
Mollusca: Nautiloidea |
Orthoceras perannulatum Portlock |
| Locality : |
Twll-du, Caernarvonshire |
| Grid Reference : |
Available from curator
|
Country : |
England & Wales |
| 1:50K map : |
106 |
|
| Chronostratigraphy : |
Caradoc Series
— Caradoc Series
|
| Lithostratigraphy : |
CARADOC ROCKS (UNDIFFERENTIATED) |
| Collector / Donor : |
Available from curator
|
| References : |
| Portlock 1843 Geol Londonderry |
| cf Blake 1882 Pal. Soc. Mon. quoted wrongly as this specimen (correct identity of Blake's figd spec not known) |
