From Wikipedia, the free encyclopedia
| Ichthyosaurs of the Blue Lias
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| Genus
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Species
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Location
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Stratigraphic position
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Material
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Notes
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Images
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| Ichthyosaurus
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I. larkini[1]
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Somerset
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Unknown, possibly Pre-planorbis beds
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Holotype: BRSUG 25300, referred: AGC 11, CAMSM J5957, NHMUK PV OR5595
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|
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| I. somersetensis[1]
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Holotype: ANSP 15766 referred: BRSMG Cb4997, NHMUK PV OR2013AGC 16, ROM 26029
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|
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| Leptonectes
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L. tenuirostris
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Southam Cement Works, Warwickshire
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Wilmcote Limestone Member
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WARMS G15647, a partial skeleton[2]
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|
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| Protoichthyosaurus
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P. prostaxalis[3]
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Somerset
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Unknown, probably Pre-planorbis beds
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Holotype: BRLSI M3553, "a partial skull, pectoral girdle and both forefins, preserved in ventral view"
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|
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| Wahlisaurus
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W. massarae[4]
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Sutton Hill (Stowey) Quarry, Bishop Sutton
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Pre-planorbis beds
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BRSMG Cg240, "a practically complete rightcoracoid"
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|
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| Plesiosaurs of the Blue Lias
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| Genus
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Species
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Location
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Stratigraphic position
|
Material
|
Notes
|
Images
|
| Atychodracon
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A. megacephalus[5]
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Street-on-the-Fosse
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Lowermost Blue Lias
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Holotype:BRSMG Cb 2335
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Rhomaleosaurid
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|
| Avalonnectes
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A. arturi[6]
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Street, Somerset (referred specimen)
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|
NHMUK 14550, "the posterior portion of the skull, and a partial postcranial skeleton" uncatalogued partial specimen
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Rhomaleosaurid
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|
| Eurycleidus
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E. arcuatus
|
Street
|
|
BMNH 2030 (lectotype), 2027-2029, 2047, 2061, R1317-1319 (paralectotypes, probably belonging to the same individual)
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Rhomaleosaurid
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|
| Eoplesiosaurus
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E. antiquior[6]
|
Watchet, Somerset
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|
TTNCM 8348, postcranial skeleton
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Basal Plesiosauroid
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|
| Stratesaurus
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S. taylori[6]
|
Street, Somerset
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lowermost Hettangian
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OUMNH J.10337, "a skull and partial postcranial skeleton including anterior cervical and pectoral vertebrae, a partial hindlimb and ilium"
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Rhomaleosaurid
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|
| Thalassiodracon
|
T. hawkinsii
|
Street
|
Pre-planorbis Beds
|
BMNH 2018 "almost complete skeleton missing distal parts of limbs" CAMSM J.35181, partial skeleton
|
Pliosaurid affinities[7]
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|
- ^ a b Lomax, Dean R.; Massare, Judy A. (2017-02). Benson, Roger (ed.). "Two new species of Ichthyosaurus from the lowermost Jurassic (Hettangian) of Somerset, England". Papers in Palaeontology. 3 (1): 1–20. doi:10.1002/spp2.1065.
- ^ Smith, A. S.; Radley, J. D. (2007-11). "A marine reptile fauna from the Early Jurassic Saltford Shale (Blue Lias Formation) of central England". Proceedings of the Yorkshire Geological Society. 56 (4): 253–260. doi:10.1144/pygs.56.4.253. ISSN 0044-0604.
- ^ Lomax, Dean R.; Massare, Judy A.; Mistry, Rashmiben T. (2017-09-03). "The taxonomic utility of forefin morphology in Lower Jurassic ichthyosaurs: Protoichthyosaurus and Ichthyosaurus". Journal of Vertebrate Paleontology. 37 (5): e1361433. doi:10.1080/02724634.2017.1361433. ISSN 0272-4634.
- ^ Lomax, Dean R.; Evans, Mark; Carpenter, Simon (2019-01). Somerville, Id (ed.). "An ichthyosaur from the UK Triassic-Jurassic boundary: A second specimen of the leptonectid ichthyosaur Wahlisaurus massarae Lomax 2016". Geological Journal. 54 (1): 83–90. doi:10.1002/gj.3155.
- ^ Smith, As (2015). "Reassessment of 'Plesiosaurus' megacephalus (Sauropterygia: Plesiosauria) from the Triassic-Jurassic boundary, UK". Palaeontologia Electronica. doi:10.26879/504. ISSN 1094-8074.
- ^ a b c Benson, Roger B. J.; Evans, Mark; Druckenmiller, Patrick S. (2012-03-16). Lalueza-Fox, Carles (ed.). "High Diversity, Low Disparity and Small Body Size in Plesiosaurs (Reptilia, Sauropterygia) from the Triassic–Jurassic Boundary". PLoS ONE. 7 (3): e31838. doi:10.1371/journal.pone.0031838. ISSN 1932-6203. PMC 3306369. PMID 22438869.
{{cite journal}}: CS1 maint: PMC format (link) CS1 maint: unflagged free DOI (link)
- ^ Benson, Roger B. J.; Bates, Karl T.; Johnson, Mark R.; Withers, Philip J. (2011-05). "Cranial anatomy of Thalassiodracon hawkinsii (Reptilia, Plesiosauria) from the Early Jurassic of Somerset, United Kingdom". Journal of Vertebrate Paleontology. 31 (3): 562–574. doi:10.1080/02724634.2011.572937. ISSN 0272-4634.
