Boreraig: Early Sinemurian, United Kingdom
collected 1999
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
- Ichthyosauridae
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cf. Ichthyosaurus communis
Conybeare 1821
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2 specimens | |||||||||
SM 1976.1999.8: block containing the impression of the ventral surface of an ichthyosaur lower jaw and 21 separated teeth, some of which preserve portions of the enamel. NMS G. 2014.21.1: single isolated tooth root | ||||||||||
see common names |
Geography
Country: | United Kingdom | State/province: | Scotland | County: | Isle of Skye |
Coordinates: | 57.0° North, 5.5° West (view map) | ||||
Paleocoordinates: | 43.0° North, 0.5° West | ||||
Basis of coordinate: | based on nearby landmark | ||||
Geographic resolution: | small collection |
Time
Period: | Jurassic | Epoch: | Early Jurassic |
Stage: | Sinemurian | 10 m.y. bin: | Jurassic 1 |
Key time interval: | Early Sinemurian | Ammonoid zone: | C. turneri |
Age range of interval: | 199.5 - 192.9 m.y. ago |
Stratigraphy
Formation: | Ardnish | Member: | Hallaig Sandstone |
Lithology and environment
Primary lithology: | "shale" |
Includes fossils? | Y |
Lithology description: Here the Ardnish Formation predominantly comprises micaceous shales and siltstones with clean, medium- to fine-grained sandstones exhibiting bipolar tabular and trough cross-beds (e.g. the Hallaig Sandstone Member of Hesselbo et al. 1998). These cross-bedded units, which contain abundant marine fossils at the bases of coarsening-up cycles, are interpreted as representing deposition in a shallow-marine/ estuarine environment with a tidal influence (Hesselbo & Coe 2000). | |
Environment: | estuary/bay |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | field collection |
Reason for describing collection: | taxonomic analysis | Collection dates: | 1999 |
Collection method comments: SM 1976.1999.8 was found loose on the shore at Boreraig (Suisnish, south Skye) by one of the authors (C.C.J.M.) in 1997 (MacFadyen 1997) (Fig. 1). It was later collected by another of the authors (D.A.R.) and Martin Wildgoose in 1999. NMS G. 2014.21.1 was found during a 2013
field trip by one of the authors (T.J.C.). |
Metadata
Database number: | 165070 | ||
Authorizer: | P. Mannion | Enterer: | J. Tennant |
Modifier: | M. Uhen | Research group: | vertebrate |
Created: | 2015-01-12 02:50:32 | Last modified: | 2018-12-12 10:56:49 |
Access level: | the public | Released: | 2015-01-12 02:50:32 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
54005. | S. L. Brusatte, M. T. Young, T. J. Challands, N. D. L. Clark, V. Fischer, N. C. Fraser, J. J. Liston, C. C. J. MacFayden, D. A. Ross, S. Walsh, and M. Wilkinson. 2015. Ichthyosaurs from the Jurassic of Skye, Scotland. Scottish Journal of Geology [P. Mannion/J. Tennant] |