Fossil specimen : SM J 6399 – Undifferentiated Type
| Taxonomic Group |
Kingdom Animalia Phylum Mollusca Class Cephalopoda Order - |
|---|---|
| Fossil Name | Walkeria arcuata Buckman S. |
| Type Status | Undifferentiated Type |
| Name History | Walkeria arcuata Buckman S. Walkeria arcuata Buckman S.: Undifferentiated Type Grammoceras |
| Registration No. | J 6399 |
|---|---|
| Collector | Name not available |
| Donor or Associated Person | Buckman, Sydney Savory (1860-1929) |
| Held By |
 Sedgwick Museum of Earth Sciences, University of Cambridge
|
| Comments |
| Country | England |
|---|---|
| Locality | Haresfield Hill, Gloucestershire, England |
| Grid Reference | Not available |
| Rock Unit | Cephalopod Bed (upper part) |
|---|---|
| Biozone | Aalensis Hemera |
| Geological Age |
Bathonian Age (Jurassic Period) – Aalenian Age (Jurassic Period) (166.1 – 174.1 Ma B.P.) |
| References | Buckman, S.S. 1890. A monograph of the ammonites of the Inferior Oolite series Palaeontographical Society Monographs (1): p.191 pl. xxxii figs.11-12 Buckman, S.S. 1902. Emendations of Ammonite Nomenclature (2): p.5 Buckman, S.S. 1904. A monograph of the ammonites of the Inferior Oolite series Palaeontographical Society Monographs (3): p. cxxxix fig.121 (p. clxvii) |
|---|
Available Images
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Steroscopic photographs
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