| P number: | P521064 |
|---|---|
| Caption: | A fossil specimen of Archaeopteris tschermaki Stur. A fossil plant. (Plantae.) Rotten Calder Water c. 1/8th mile south-west of Bashel, Lanarkshire, Scotland. |
| Description: | Archaeopteris was large and fern-like and had roots very like a modern tree. This specimen is a later Carboniferous form from Rotten Calder Water c. 1/8th mile south-west of Bashel in Strathclyde. British Geological Survey Biostratigraphy Collection number GSE 13996. Archaeopteris attained a high degree of differentiation in the Upper Devonian and is represented in the Old Red Sandstone of Caithness and Southern Ireland by large compound fern-like fronds with cuneate leaflets and clusters of sporangia. Other species of Archaeopteris have been recorded from Russia and Ellesmereland in North America. It is unknown whether Archaeopteris was a true fern or belonged to the now extinct group of fern-like seed-bearing plants called pteridosperms, the latter were very dominant in the Upper Carboniferous floras. Cited Kidston in Summary of Progress for 1910 (1911) p.66. |
| Date taken: | Wed Jan 01 00:00:00 GMT 2003 |
| Photographer: | Unknown |
| Copyright statement: | NERC |
| Orientation: | Portrait |
| Size: | 406.18 KB; 652 x 1000 pixels; 55 x 85 mm (print at 300 DPI); 173 x 265 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Best of BGS Images/ Fossils |
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