'Alum Shale' (Main Alum Shales, Harpoceras bifrons), Whitby-Saltwick, Yorkshire: Bifrons, United Kingdom
collected 1800
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Reptilia
- Plesiosauria
- Microcleididae
|
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Plesiosaurus homalospondylus n. sp.
Owen 1865
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3 individuals | |||||||||
| recombined as Microcleidus homalospondylus | ||||||||||
| BMNH 36154 (holotype skeleton) and YORYM 502 (referred skeleton; "lias cliffs south of Whitby, by Mr Brown Marshall, and liberally presented by Col. Cholmley" to York Museum in 1853); Watson (1909) later reported MMUM LL 7077 (partial skeleton, collected by W. G. Sutcliffe, Esq., F.G.S, from Whitby) | ||||||||||
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Reptilia
- Plesiosauria
|
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Sthenarosaurus dawkinsi n. gen., n. sp.
Watson 1909
|
Watson 1909 | 1 individual | ||||||||
| MMUM LL 8023 (holotype postcranial skeleton) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United Kingdom | State/province: | England | County: | Yorkshire |
| Coordinates: | 54.5° North, 0.6° West (view map) | ||||
| Paleocoordinates: | 42.4° North, 9.3° East | ||||
| Basis of coordinate: | estimated from map |
Time
| Period: | Jurassic | Epoch: | Early/Lower Jurassic |
| Stage: | Toarcian | 10 m.y. bin: | Jurassic 3 |
| Key time interval: | Bifrons | Ammonoid zone: | Hildoceras bifrons |
| Age range of interval: | 182.00000 - 174.70000 m.y. ago |
Stratigraphy
| Formation: | Alum Shale | Member: | Main Alum Shales |
Lithology and environment
| Primary lithology: | concretionary,gray "shale" |
| Secondary lithology: | sideritic mudstone |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | selective quarrying,surface (in situ) |
| Reason for describing collection: | taxonomic analysis | Collection dates: | mostly 1800s |
Metadata
| Database number: | 118471 | ||
| Authorizer: | R. Benson | Enterer: | R. Benson |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2011-10-14 22:01:14 | Last modified: | 2017-12-20 13:22:21 |
| Access level: | the public | Released: | 2011-10-14 22:01:14 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 38162. | R. Owen. 1865. Part I. Sauropterygia. Monographs on the fossil Reptilia of the Liassic formations 17(75):1-40 [R. Benson/R. Benson/M. Carrano] |
Secondary references:
| 30422 | M. J. Benton and M. A. Taylor. 1984. Marine reptiles from the Upper Lias (Lower Toarcian, Lower Jurassic) of the Yorkshire coast. Proceedings of the Yorkshire Geological Society 44(4):399-429 [W. Kiessling/U. Merkel] | |
| 38172 | D. M. S. Watson. 1909. IV. A preliminary note on two new genera of upper Liassic plesiosaurs. Memoirs and Proceedings of the Manchester Literary and Philosophical Society 54(4):1-28 [R. Benson/R. Benson] |