Street (general): Early/Lower Hettangian, United Kingdom
collected by Hawkins and others 1820-1900

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Plesiosauria - Pliosauridae
Plesiosaurus hawkinsii n. sp. Owen 1840
6 individuals
recombined as Thalassiodracon hawkinsii
BMNH 2018* (holotype), and other individuals listed by Benson et al. (2011): BMNH 2020* [14511], 2022* [14549], CAMSM J.35181, J.46986, ANSP 15767 (mostly partial skeletons)
Plesiosaurus eleutheraxon n. sp. Seeley 1865
Seeley 1865 1 specimen
synonym of Thalassiodracon hawkinsii
CAMSM J.35181 (holotype partial postcranial skeleton)
Reptilia - Plesiosauria - Rhomaleosauridae
Rhomaleosaurus megacephalus (Stutchbury 1846)
Storrs and Taylor 1996 1 specimen
NMING F10194/1-37 (partial skeleton)
Avalonnectes arturi n. gen., n. sp. Benson et al. 2012
Benson et al. 2012 2 specimens
BMNH 14550 (holotype); AGT uncatalogued (partial postcranial skeleton)
Plesiosaurus arcuatus n. sp. Owen 1840
1 specimen
recombined as Eurycleidus arcuatus
BMNH 2030 (lectotype), 2027-2029, 2047, 2061, R1317-1319 (paralectotypes, probably belonging to the same individual)
Reptilia - Plesiosauria
Plesiosaurus cliduchus n. sp. Seeley 1865
Seeley 1865 1 specimen
CAMSM J.35180 (holotype partial postcranial skeleton)
Stratesaurus taylori n. gen., n. sp. Benson et al. 2012
Benson et al. 2012 3 specimens
OUMNH J.10337 (holotype), AGT 11 (skull); GSM 26035 (skull)
Reptilia - Ichthyosauridae
Protoichthyosaurus prostaxalis n. sp. Appleby 1979
Appleby 1979 4 specimens
B. 1963'5/OS, Moore Collection (holotype), very likely to be from this locality; B. 1963'7/OS, Moore Collection; OUM J.13,799, Duke of Marlborough's Collection; B. 1963'15/OS, Moore Collection
Ichthyosaurus larkini Lomax and Massare 2017
Lomax and Massare 2017 2 specimens
CAMSM J59575, skull and anterior skeleton; NHMUK PV R5595, nearly complete skeleton
Ichthyosaurus somersetensis Lomax and Massare 2017
Lomax and Massare 2017 3 specimens
BRSMG Cb4997, skeleton; NHMUK PV OR2013*, skeleton; AGC 16, fragmentary skeleton
Protoichthyosaurus prosostealis n. sp. Appleby 1979
Appleby 1979 1 specimen
nomen dubium belonging to Ichthyosaurus
B. 1963'24/OS, Moore Collection (holotype), very likely to be from this locality
Ichthyosaurus communis Conybeare 1821
Lydekker 1888 1 individual
associated with type of P. arcuatus
Ichthyosaurus intermedius Conybeare 1822
Owen 1854 1 specimen
synonym of Ichthyosaurus communis
upper & lower jaws, RCS
see common names

Geography
Country:United Kingdom State/province:England County:Somerset
Coordinates: 51.1° North, 2.7° West (view map)
Paleocoordinates:37.4° North, 1.2° East
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period:Jurassic Epoch:Early/Lower Jurassic
Stage:Hettangian 10 m.y. bin:Jurassic 1
Key time interval:Early/Lower Hettangian
Age range of interval:201.40000 - 199.50000 m.y. ago
Stratigraphy
Geological group:Lias Formation:Blue Lias
Stratigraphic resolution:formation
Stratigraphy comments: 'Pre-planorbis beds' of the Blue Lias Formation
Lithology and environment
Primary lithology:massive,shelly/skeletal "limestone"
Secondary lithology: "shale"
Includes fossils?Y
Environment:shallow subtidal indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Abundance in sediment:rare
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Museum repositories:BMNH
Collectors:Hawkins and others Collection dates:1820s-c.1900
Collection method comments: Oxford University Museum of Natural History (OUMNH); Sedgwick Museum of Geology, Cambridge (CAMSM) collections
Metadata
Database number:119083
Authorizer:R. Benson, A. Dunhill, M. Carrano Enterer:R. Benson, M. Carrano, B. Allen
Modifier:M. Carrano Research group:vertebrate
Created:2011-10-20 19:25:50 Last modified:2017-11-07 11:17:38
Access level:the public Released:2011-10-20 19:25:50
Creative Commons license:CC BY
Reference information

Primary reference:
34651. R. Owen. 1840. Report on British fossil reptiles. Report of the British Association for the Advancement of Science 8:43-126 [M. Carrano/H. Street/M. Carrano]

Secondary references:

35316 R. M. Appleby. 1979. The affinities of Liassic and later ichthyosaurs. Palaeontology 22(4):921-946 [M. Carrano/H. Street]
36328ETE 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]
31216ETE J. B. Delair. 1960. The Mesozoic reptiles of Dorset. Part two. Proceedings of the Dorset Natural History and Archaeological Society 80:52-90 [M. Carrano/M. Carrano/R. Benson]
38377 T. H. Huxley. 1858. On a new species of Plesiosaurus from Street, near Glastonbury; with remarks on the structure of the atlas and axis vertebrae, and of the cranium, in that genus. Quarterly Journal of the Geological Society of London 14:281-294 [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]
14142ETE 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]
9842 R. Owen. 1854. Descriptive catalogue of the Fossil organic remains of Reptilia and Pisces contained in the Museum of the Royal College of Surgeons of England. London 1-184 [M. Carrano/M. Carrano/M. Carrano]
38375 H. G. Seeley. 1865. On two new plesiosaurs, from the Lias. Annals and Magazine of Natural History, series 3 16:352-359 [R. Benson/R. Benson]
32795 G. W. Storrs and M. A. Taylor. 1996. Cranial anatomy of a new plesiosaur genus from the lowermost Lias (Rhaetian/Hettangian) of Street, Somerset, England. Journal of Vertebrate Paleontology 16(3):403-420 [M. Carrano/H. Street]