Otter Sandstone Formation

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

[edit]

* List of fossiliferous stratigraphic units in England

## References

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1. ^ a b c d http://www.bgs.ac.uk/Lexicon/lexicon.cfm?pub=OS (BGS on-line lexicon of rock units)
2. ^ http://www.bgs.ac.uk/Lexicon/lexicon.cfm?pub=HEY (BGS on-line lexicon of rock units)

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