Walton, west of Street: Early/Lower Hettangian, United Kingdom
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
- Plesiosauria
- Pliosauridae
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Plesiosaurus sp.
de la Beche and Conybeare 1821
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1 individual | |||||||||
NHMUK 2021* | ||||||||||
= Plesiosaurus hawkinsi
Owen 1840
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Lydekker 1888 | |||||||||
recombined as Thalassiodracon hawkinsii | ||||||||||
Reptilia
- Ichthyosauridae
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Ichthyosaurus larkini n. sp.
Lomax and Massare 2017
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Lomax and Massare 2017 | 1 specimen | ||||||||
BRSUG 25300 (holotype), nearly complete skeleton, previously identified as I. communis | ||||||||||
Ichthyosaurus chiroparamekostinus
Hawkins 1834
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1 individual | |||||||||
synonym of Ichthyosaurus communis | ||||||||||
tail, paddle | ||||||||||
Ichthyosaurus chirostrongulostinus
Hawkins 1834
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1 individual | |||||||||
synonym of Ichthyosaurus tenuirostris | ||||||||||
snout | ||||||||||
see common names |
Geography
Country: | United Kingdom | State/province: | England | County: | Somerset |
Coordinates: | 51.1° North, 2.8° West (view map) | ||||
Paleocoordinates: | 37.3° North, 1.2° East | ||||
Basis of coordinate: | based on nearby landmark | ||||
Geographic resolution: | outcrop |
Time
Period: | Jurassic | Epoch: | Early/Lower Jurassic |
Stage: | Hettangian | 10 m.y. bin: | Jurassic 1 |
Key time interval: | Early/Lower Hettangian | Ammonoid zone: | Psiloceras tilmanni |
Age range of interval: | 201.40000 - 199.50000 m.y. ago |
Stratigraphy
Lithology and environment
Primary lithology: | not reported |
Environment: | marine indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Preservation of anatomical detail: | good |
Abundance in sediment: | rare |
Fragmentation: | occasional |
Spatial resolution: | parautochthonous |
Collection methods and comments
Collection methods: | survey of museum collection |
Collection size: | 1 specimens |
Reason for describing collection: | general faunal/floral analysis |
Museum repositories: | BMNH |
Metadata
Database number: | 110213 | ||
Authorizer: | M. Carrano, A. Dunhill | Enterer: | H. Street, B. Allen, M. Carrano |
Modifier: | P. Wagner | Research group: | vertebrate |
Created: | 2011-06-04 05:42:08 | Last modified: | 2021-02-17 20:54:15 |
Access level: | the public | Released: | 2011-06-04 05:42:08 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
49835. | T. Hawkins. 1834. Memoirs of Ichthyosauri and Plesiosauri, Extinct Monsters of the Ancient Earth vi-51 [M. Carrano/M. Carrano] |
Secondary references:
36328 | ETE | R. B. J. Benson, K. T. Bates, M. R. Johnson and P. J. Withers. 2011. Cranial anatomy of Thalassiodracon hawkinsii (Reptilia, Plesiosauria) from the Early Jurassic of Somerset, United Kingdom. Journal of Vertebrate Paleontology 31(3):562-574 [M. Carrano/H. Street/R. Benson] |
41463 | R. B. J. Benson, M. Evans, and P. S. Druckenmiller. 2012. High diversity, low disparity and small body size in plesiosaurs (Reptilia, Sauropterygia) from the Triassic–Jurassic boundary. PLoS ONE 7(3):e31838 [R. Benson/R. Benson] | |
67965 | D. R. Lomax and J. A. Massare. 2017. Two new species of Ichthyosaurus from the lowermost Jurassic (Hettangian) of Somerset, England. Papers in Palaeontology 3(1):1-20 [A. Dunhill/B. Allen] | |
14142 | ETE | R. Lydekker. 1888. Catalogue of the Fossil Reptilia and Amphibia in the British Museum (Natural History). Part I. Containing the Orders Ornithosauria, Crocodilia, Dinosauria, Squamata, Rhynchocephalia, and Proterosauria. British Museum (Natural History), London 1-309 [M. Carrano/M. Carrano/M. Uhen] |