| P number: | P521143 |
|---|---|
| Caption: | A fossil specimen of Diplograptus truncatus Lapworth var. pauperatus Elles and Wood. A fossil graptolite. (Graptolithina.) Dobb's Linn, Moffat Water, near Birkhill about 9.5 miles north-east of Moffat, Dumfriesshire, Scotland. |
| Description: | Diplograptus lived between the Middle Ordovician to the Lower Silurian (Llanvirn to Landovery). This specimen is from the Lower Hartfell Shales. British Geological Survey Biostratigraphy Collection number GSE 8231. It is biserial, it has two rows of thecae arranged back to back and grew in an upwards direction away from the sicula and scandent (stipes grow upwards from the sicula with the thecae growing outwards). Graptolites are related to the living Protochordata. They consisted of colonies of tiny individuals enclosed in a common horny sheath. They were widely distributed as they floated in the surface waters of the ancient oceans. On death the sheaths sank to the ocean floor and were buried and preserved. |
| Date taken: | 01/01/2003 |
| Photographer: | Unknown |
| Copyright statement: | NERC |
| Orientation: | Landscape |
| Size: | 265.42 KB; 1000 x 665 pixels; 85 x 56 mm (print at 300 DPI); 265 x 176 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
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