The Scunthorpe Mudstone is a geologic formation in England. It preserves plesiosaur fossils dating back to the Late Triassic (Rhaetian) to Early Jurassic (Hettangian) period.[1] It predominantly consists of grey mudstone with thin beds of argillaceous limestone and calcareous siltstone.[2] The Ichthyosaur Wahlisaurus is known from the formation.[3] As is the holotype specimen of the dinosaur Sarcosaurus.[4]
| Scunthorpe Mudstone | |
|---|---|
| Stratigraphic range: Rhaetian-Hettangian ~ | |
| Type | Formation |
| Unit of | Lias Group |
| Sub-units | Barnstone Member |
| Underlies | Charmouth Mudstone Formation |
| Overlies | Lilstock Formation |
| Thickness | Up to 128 m |
| Lithology | |
| Primary | Mudstone |
| Other | Limestone, Siltstone |
| Location | |
| Coordinates | 52°54′N 1°00′W / 52.9°N 1.0°W |
| Approximate paleocoordinates | 38°00′N 1°18′E / 38.0°N 1.3°E |
| Region | England |
| Country |  United Kingdom |
| Extent | East Midlands Shelf Leicester to Market Weighton |
| Type section | |
| Named for | Scunthorpe |
| Location | Blyborough Borehole, Blyborough, Lincolnshire |
  Scunthorpe Mudstone (the United Kingdom)  Scunthorpe Mudstone (England) | |
See also
editReferences
edit- ^ Cropwell plesiosaur at Fossilworks.org
- ^ "Scunthorpe Mudstone Formation". BGS Lexicon of Named Rock Units. Retrieved 28 September 2019.
- ^ Lomax, Dean R. (4 May 2017). "A new leptonectid ichthyosaur from the Lower Jurassic (Hettangian) of Nottinghamshire, England, UK, and the taxonomic usefulness of the ichthyosaurian coracoid". Journal of Systematic Palaeontology. 15 (5): 387–401. Bibcode:2017JSPal..15..387L. doi:10.1080/14772019.2016.1183149. ISSN 1477-2019. S2CID 88578965.
- ^ Ezcurra, Martín D; Butler, Richard J; Maidment, Susannah C R; Sansom, Ivan J; Meade, Luke E; Radley, Jonathan D (23 June 2020). "A revision of the early neotheropod genus Sarcosaurus from the Early Jurassic (Hettangian–Sinemurian) of central England". Zoological Journal of the Linnean Society. 191: 113–149. doi:10.1093/zoolinnean/zlaa054. hdl:11336/160038. ISSN 0024-4082.
Further reading
edit- R. Forrest. 1998. A possible early elasmosaurian plesiosaur from the Triassic/Jurassic boundary of Nottinghamshire. Mercian Geologist 14(3):135-143
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