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Viewing swaag.org website implies consent to set cookies on your computer. Full details Swaledale and Arkengarthdale Archaeology Group
Registered Charitable Incorporated Organisation Number 1155775
SWAAG Honorary President:
Tim Laurie FSA

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 *****SWAAG_ID***** 993
 Date Entered 07/05/2017
 Updated on 08/05/2017
 Recorded by Tim Laurie
 Category Geological Record
 Record Type Geological HER
 Site Access Public Access Land
 Record Date 06/05/2017
 Location Sleightholme Beck
 Civil Parish Bowes
 Brit. National Grid Hidden
 Geology Black shales over The Great Limestone.
 Record Name Lingula, the earliest recorded brachiopod in the Geological Record which survives today unchanged.
 Record Description Lingula squamaformis, a distinctive flat, ovoid slipper shaped fossil brachiopod. Found in black shales overlying the Great Limestone in the base of a low cliff on the south bank of Sleightholme Beck, see Reference 1.
When first recognised, these fossils were abundant and easily found. In the meantime however low water levels in the stream have allowed the growth of moss and algae over this exposure which is at stream level and these fossils are now very difficult to find.
 Dimensions See photos
 Additional Notes The time range of this Genus extends from the Ordovician to Recent, Reference 2. References:
1.D.A.C. Mills and Hull J.H.,1976. 'Geology of the Country around Barnard Castle.' Memoirs of the Geological Survey of Great Britain. NERC. pp45,46.
2.British Palaeozoic Fossils. 1966. British Museum (Natural History). Plate 46.
 Image 1 ID 7319         Click image to enlarge
 Image 1 Description Lingula squamiformis on slab in Sleightholme Beck
 Image 2 ID 7320         Click image to enlarge
 Image 2 Description Lingula squamiformis on slab in Sleightholme Beck
 Image 3 ID 7321         Click image to enlarge
 Image 3 Description Lingula squamiformis on slab in Sleightholme Beck
 Image 4 ID 7322         Click image to enlarge
 Image 4 Description Lingula squamiformis on slab in Sleightholme Beck
 
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