| Otter Sandstone Formation (OS)[1] | |
|---|---|
| Stratigraphic range: Anisian | |
|  Exposures of Otter Sandstone at Ladram Bay, Devon, England | |
| Type | Formation | 
| Unit of | Sherwood Sandstone Group (SSG)[1] | 
| Underlies | In coastal exposures, transitional into overlying Mercia Mudstone.[1] | 
| Overlies | Budleigh Salterton Pebble Beds[1] | 
| Thickness | Coast and Exeter district: ~160 m (520 ft) Taunton district: 30–60 m (98–197 ft) | 
| Location | |
| Region | England | 
| Country |  United Kingdom | 
The Otter Sandstone Formation is an obsolete geological unit in England, now referred to as the Helsby Sandstone Formation.[2] It preserves fossils dated to the Triassic, Anisian period.
See also
References
- 1 2 3 4 http://www.bgs.ac.uk/Lexicon/lexicon.cfm?pub=OS (BGS on-line lexicon of rock units)
- ↑ http://www.bgs.ac.uk/Lexicon/lexicon.cfm?pub=HEY (BGS on-line lexicon of rock units)
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