Genus: Ichthyosaurus De la DECHENE & CONYBEARE, 1821
Etymology: Greek, ikhthyos (ikthys), “fish” and Greek, sauros, “lizard”: Fish lizard.
= Eurpterygius JAEKEL, 1904
Etymology: Greek, eurys, “wide”, Greek, pterygion, “fin” + us: Wide fin.
= Gryphus WAGLER, 1830
Etymology: Greek, Grypus “griffin”, Half-bird, Half-lion.
= Ichthyoterus ROUILLIER, 1847 (sic)
= Paramecostinus HAWKINS, 1840
Etymology :
= Polyostinus HAWKINS, 1840
Etymology:
= Proteosaurus HOME, 1819
Etymology: Proteus, (genus of amphibian) and Greek, sauros, “lizard”: Proteus lizard.

Species: communis De la DECHENE & CONYBEARE, 1821
Etymology:

Holotype: GSM (?) 4476

Locality: ?Lyme Regis, Dorset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Jurassic.

Material: Tooth.


Holotype: Now lost

Locality: Lyme Regis coast, Pinhay Bay- Charmouth, (SY 3291-SY 3794), Dorset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Hettangian-Pliensbachian Stage, Lower Lias Epoch, Early Early Jurassic.

Material: A partial skeleton.

Neotype: NHMUK (old BMNH) R1162

After Huene.

Referred material:

= cf. Ichthyosaurus communis BRUSATTE, YOUNG, CHALLANDS, CLARK, FISCHER, FRASER, LISTON, MacFADYEN, ROSS, WALSH, & WILKINSON, 2015

Locality: On the shore of Boreraig, Suisnish, south Isle of Skye, Inverness-Shire County, Highland Province, Scotland, Northern United Kingdom.

Horizon: Hallaig Sandstone Member, Ardnish Formation.

Biostratigraphy: C. turneri ammonite zone.

Age: Lower Sinemurian Stage, Lower Middle Lias Epoch, Lower Jurassic.

Material:

SM 1976.1999.8: Lower jaw, and teeth.

NMS G.2014.21.1: Tooth.

 

DELAIR, 1960

Oxford University Museum J.10302, J.10303, J.10329, etc: Partial skeletons of juveniles.

J. 12127: A large scapula.

J. 12141: A paddle.

J. 12216: Vertebrae.

Royal College of Surgeons: G.1, G.9, G.11, G.13: Some cranial bones, a paddle, and a nearly complete skeleton.
Note: Now at the Dorset County Museum.

HAWKINS

Number: Not given: Skull and skeleton.

LYDEKKER, 1890

BMNH R1996: Skull and skeleton.

BMNH R1997: Fragmentary skull and fragmentary skeleton.

McGOWAN, 1974

BMNH R1073: Skull and skeleton.

BMNH 36256: Skull and skeleton.

BMNH R12: Skull and skeleton.

BMNH R1071: Fragmentary skeleton.

BMNH 39492: Skull.

OWEN, 1854

Royal College of Surgeons 134: Skull and skeleton of a juvenile.

Royal College of Surgeons 135: Part of skull and the beginning of the vertebral column with the pelvic arch of a juvenile.

Royal College of Surgeons 137: Plaster cast of a large skull.

Royal College of Surgeons 138: Fragmentary skull and dentary of a juvenile.

Royal College of Surgeons 139: A transverse section of both upper and lower jaws.

Royal College of Surgeons 140: A similar section of another specimen.

Royal College of Surgeons 141: A longitudinal section of the middle part of the upper and lower jaws.

Royal College of Surgeons 142: Fragment of upper and lower jaws.

Royal College of Surgeons 143: Portion of upper and lower jaws.

Royal College of Surgeons 144: A section of upper and lower jaws of a juvenile.

Royal College of Surgeons 145: A section of upper jaw and 5 teeth.

Royal College of Surgeons 146: A portion of jaw with 11 teeth.

Royal College of Surgeons 147: A section of lower jaw with 5 teeth.

Royal College of Surgeons 148: A transverse section of 2 rami of lower jaw.

Royal College of Surgeons 152: Tooth.

PATON, 1975

RSM: 1 complete skeleton and 1 paddle.

SOLLAS

Number: Not given: Skull.

 

DEEMING, HALSTEAD, MANABE & UNWIN, 1993

Locality: At low water mark near Kilve, (National Grid reference ST 144447), Somerset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy: Psiloceras johnstoni subzone.

Age: Hettangian Stage, Lower Lias Epoch, Early Jurassic.

Material: Nearly complete specimen with embryo’s.

Kilve B, BRSMG Ce 16611: An embryo.
Note: ‘is an ichthyosaur embryo which died about half way through the gestation period, and represents one of the earliest ontogenttic stages yet pressured in the ichthyosaur record.

 

DOLLO, 1909

Locality: Suburbs of Arlon, Luxemburg.

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Jurassic.

Material:

Number: Not given:

 

Appendix in DEEMING et. Al, 1993

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

BMNH 39492: Skull.

BMNH 41159: Skull.

BMNH R1071: Incomplete.

BMNH R 1074: Incomplete.

BMNH R1162: Intact.

BMNH R12: Intact.

BMNH R120: Intact.

BMNH R1696: Intact.

BMNH R3372: Intact.

BMNH R3372A: “Small associated”.

BMNH R36256: Intact.

BRLSI M3350: Intact.

BRLSI M3354: Skull.

BRLSI M3359: Intact.

BRLSI M3369: Intact.

 

LARKIN, LOMAX, BOOMER, & SMITHSON, 2016

Locality: Possibly Hock Cliff, Gloucestershire County, England, Southern United Kingdom.

Horizon:

Biostatigraphy:

Age: Latest Hettangian to very early Sinemurian Stage, Lower Middle Lias Epoch, Early Jurassic.

Material:

Lapworth Museum of Geology, no. BU5289: Nearly complete neonate skeleton.

 

MAISCH & REISDORF, 2006

Locality: Claystone pit, Frick, Switzerland.

Horizon: Arietenkalk.

Biostratigraphy:

Age: Early Sinemurian Stage, Lower Middle Lias Epoch, Early Jurassic.

Material:

SMF 46: Incomplete skull.

 

MAISCH, REISDORF, SCHLATTER & WETZEL, 2008

Locality: Frick, Canton Aargu, Northern Switzerland.

Horizon: Upper part of the "Beggingen Member", previously "Arietenkalk".

Biostratigraphy: Semicostatum Zone.

Horizon: Lower Sinemurian Stage, Lower Lias Epoch, Early Jurassic.

Material:

SMF 46: An incomplete skull, a possible rib fragment (on the slab of SMF 46).

SMF 66: 2 complete and a third fragmentary vertebra.

 

McGOWAN, 1974

Locality: Street, Somerset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Jurassic.

Material:

BMNH 2013a, R44, 14565, SMC J35183: Skulls and skeletons.

SMC J59644: Composite skeleton with added forefin.

 

OWEN, 1842

Locality: Barrow-on-Soar, Leichestershire County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Jurassic.

Material:

Number: Not given: Pelvic paddle and impressions of integument’s.

 

OWEN, 1854

Locality: Unknown, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Unknown.

Locality:

Royal College of Surgeons 149: A portion of upper and lower jaws.

Royal College of Surgeons 153: Base of tooth.

 

Locality: Bath, Somersetshire County, England, Southern United Kingdom.

Horizon: Oolite Formation.

Biostratigraphy:

Age: Late Jurassic.

Material:

Royal College of Surgeons 150: Teeth.

Royal College of Surgeons 151: Teeth.

 

Locality: Leichestershire County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Lias Epoch, Early Jurassic.

Material:

Royal College of Surgeons 136: A plaster cast of a fragmentary skull.

 


Locality: Somersetshire County, England, Southern United Kingdom.

Horizon: Oolite.

Biostratigraphy:

Age: Early Jurassic.

Material:

Royal College of Surgeons 154: Centrum.

 

REIFF

Locality: Aldingen, Baden-Wurttemburg State, Germany.

Horizon: Arietenkalk.

Biostratigraphy: Bucklandii zone.

Age: Early Jurassic.

Material:

Stuttgart Naturaliensammlung: Fragmentary skull.

 


Locality: Dusslingen, Baden-Wurttemberg State, Germany.

Horizon:

Biostratigraphy: Tuberculatus zone.

Age: Early Jurassic.

Material:

Tubingen Geol. Uinv. Inst: Posterior dorsal vertebrae.

 

Locality: Schaichhof, Baden-Wurttemberg State, Germany.

Horizon: Arietenkalk.

Biostratigraphy:

Age: Early Jurassic.

Material:

Stuttgart Naturaliensammlung: Dorsal vertebrae.

 


Locality: Frittlingen, Baden-Wurttemberg State, Germany.

Horizon: Early Arientenkalk.

Biostratigraphy:

Age: Early Jurassic.

Material:

TUBINGEN Geol. Uinv. Inst: Dorsal vertebrae.

 

Locality: Malsch, Baden-Wurttemberg State, Germany.

Horizon: Arientalk.

Biostratigraphy:

Age: Early Jurassic.

Material:

Stuttgart Naturaliensammlung: Caudal vertebrae.

 

KARLSRUHE, Bad. LANDESSAMLUNG F. Naturke.

Locality: Malsch, Baden-Wurttemberg State, Germany.

Horizon: Doppelfels.

Biostratigraphy: Kuperfeleszone.

Age: Late Triassic?

Material:

Number: Not given: Basisphenoid, teeth, dorsal and caudal vertebrae, scapula, coracoid, and humerus fragment.

 


WOODWARD

Locality: Sommerset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Jurassic.

Material:

Number: Not given: Skull and skeleton showing embryos.

 

= Proteosaurus HOME, 1819

= Ichthyosaurus cf communis VINCENT, TAQUET, FISCHER, BARDET, FALCONNET, & GODEFROIT, 2014

Locality: Lyme Regis coast, Dorset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Hettangian-Pliensbachian Stage, Lower Lias Epoch, Early Early Jurassic.

Material:

MHNAC 9682: Skull lacking the anterior hlaf o fthe rostrum and left posterolateal side.

= Gryphus WAGLER, 1830

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

= Ichthyosaurus chiroparamekostinus HAWKINS, 1834
Etymology:

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

 

= Ichthyosaurus chiropolyostinus HAWKINS, 1834 (nomen dubium)
Etymology:
= Eurypterygius chiropolyostinus (HAWKINS, 1834) HUENE, 1922

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

 

= Ichthyosaurus latimanus OWEN, 1840
Etymology:
= Eurypterygius latimanus (OWEN, 1840) HUENE, 1922

Holotype:

Locality: Saaltford, near Bath and the Penarth Beds of Glamorganshire County, England, Southern United Kingdom.

Horizon: Rhetic.

Biostratigraphy:

Age: Rhaetian, Uppermost Late Triassic Epoch, Latest Triassic.

Material: Skull and skeleton.

Note: According to Spamer & Daeschler, 1995

Holotype: BRSMB Cb2464

Locality: Perhaps from a quarry at Nightcoutt, in the parrish of Banwell, Somersetshire County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Lias Epoch, Early Jurassic.

Material: Skull and nearly complete skeleton.

Note: Destroyed during an incendiary bomb in 1940.

Cast: ANSP 1847, Syntype: ANSP 17426:

Referred material:

DEEMING, HALSTEAD, MANABE & UNWIN, 1993

Locality: England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Hettangian-Sinemurian Stage, Lower Lias Epoch, Early Jurassic.

Material:

BRSMG Ce 921: Intact.

 

= Ichthyosaurus fortimanus OWEN, 1884
Etymology:

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Material: Paddle.

 

= Eurypterygius communis HUENE 1922 (partim)

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

Number: Not given:

 

= Stenopterygius hauffianus (HUENE, 1922) MAISCH, 1997

Locality: Whitby, Yorkshire County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Upper Lias Epoch, Early Jurassic.

Material:

SMNS 13111: Skull.

 

OWEN, 1854

Locality: Lyme Regis coast, Pinhay Bay- Charmouth, (SY 3291-SY 3794), Dorset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Hettangian-Pliensbachian Stage, Lower Lias Epoch, Early Early Jurassic.

Material:

Royal College of Surgeons 156: Skull and skeleton.

Royal College of Surgeons 158: Portions of skull, vertebrae and forepaddle.

Royal College of Surgeons 160: Fragmentary skull and anterior trunk vertebrae.

Royal College of Surgeons 161: A section of same block with vertebral parts, scapulararch and bones of anterior paddle.

Royal College of Surgeons 162: Basioccipital.

Royal College of Surgeons 163: Cast of atlas and axis of a juvenile.

 


Locality: Somersetshire County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Lias Epoch, Early Jurassic.

Material:

Royal College of Surgeons 164: A centrum.

 


Locality: Axmouth, Devon County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Lias Epoch, Early Jurassic.

Material:

Royal College of Surgeons 157: Portion of upper and lower jaws.

 


Locality: Street, Dorset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Lias Epoch, Early Jurassic.

Material:

Royal College of Surgeons 159: A fragment of upper and lower jaws.

 

PATON, 1975

Locality: Lyme Regis coast, Pinhay Bay- Charmouth, (SY 3291-SY 3794), Dorset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Sinemurian Stage, Lower Lias Epoch, Early Jurassic.

Material:

RSM: 1 paddle.

 


Locality: Unknown, Yorkshire County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Toarcian Stage, Upper Lias Epoch, Early Jurassic.

Material:

RSM: 1 paddle.

 

 

Locality: Unknown.

Horizon:

Biostratigraphy:

Age: Unknown.

Material:

RSM: 1 complete skeleton.

 

REIFF,

Locality: Malsch, Baden-Wurttemberg State, Germany.

Horizon: Doppelfels.

Biostratigraphy: Kuperfelzone.

Age: Late Triassic?

Material:

Karlsruhe, bad. Landessammlung f. Naturkde: Dorsal and caudal vertebrae.

 

SAUVAGE

Locality: Watchet, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Jurassic.

Material:

Number: Not given: Skull and skeleton.

 

= Ichthyosaurus chiroparamekostinus HAWKINS, 1832
Etymology:
= Eurypterygius chiroparamekostinus (HAWKINS, 1834) HUENE, 1922

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Mateiral:

 

= Ichthyosaurus paramekostinus HAWKINS, 1840 (nomen nudum)
Etymology:

Note: Hawkins may be describing the type material.

 

= Ichthyosaurus intermedius CONYBEARE, 1822
Etymology: Latin, intermedius, "intermediate."
= Eurypterygius intermedius (CONYBEARE, 1822) JAEKEL, 1904

Holotype:

Locality: Lyme Regis coast, Pinhay Bay- Charmouth, (SY 3291-SY 3794), Dorset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Hettangian-Pliensbachian Stage, Lower Lias Epoch, Early Early Jurassic.

Material: Skull and skeleton.
Note: According to Delair, 1960 the type is a tooth.

Referred material:

BENTON & TAYLOR, 1984

Locality: Robin Hood’s Bay, Whitby, Yorkshire County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Middle Upper Sinemurian Stage, Lower Lias Epoch, Early Jurassic.

Material:

BMNH R653: A poor skeleton.

 

DELAIR, 1960

Locality: Lyme Regis coast, Pinhay Bay- Charmouth, (SY 3291-SY 3794), Dorset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Hettangian-Pliensbachian Stage, Lower Lias Epoch, Early Early Jurassic.

Material:

Oxford University Museum J.1236a-b, J.12362, J.12364a-b: Sections of rami and teeth.

 

/MANSEL-PLEYDELL

Locality: Charmouth, Dorset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Jurassic.

Material:

Number: Not given:

 

DEEMING, HALSTEAD, MANABE & UNWIN, 1993

Locality: England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Hettangian-Sinemurian Stage, Lower Lias Epoch, Early Jurassic.

Material:

BRSMG Ce 921: Intact.

NMW b: Intact (Cast)

 

LYDEKKER, 1890

Locality: Barrow-on-Soar, Leicestershire County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Jurassic.

Material:

BMNH R1664: Fragmentary skeleton of a juvenile.

_____________________________________________________________________________________

Species: breviceps OWEN, 1883
Etymology: Latin, brevis, "short" and Latin, -ceps, "head."
= Eurypterygius breviceps (OWEN, 1883)

Holotype: BMNH 43006

Locality: Lyme Regis coast, Pinhay Bay- Charmouth, (SY 3291-SY 3794), Dorset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Upper Hettangian-Lower Sinemurian Stage, Lower Lias Epoch, Early Jurassic.

Material: Skull and skeleton.

Referred material:

BMNH R216, 8437, R1074: Skulls and skeletons.

BMNH R3367: Skull and partial pectoral girdle with some vertebrae and ribs.

BMNH R39263: Skull.

BMNH 33277: Skull and fragmentary skeleton.

MASSARE & LOMAX, 2014

CAMSMZ X50187: Composite skull and skeleton, with added anterior caudal vertebra.

NON Ichthyosaurus breviceps OWEN, 1881
NON Eurypterygius breviceps (OWEN, 1881)

 

= Ichthyosaurus cf. I. breviceps McMENAMIN, FLEURY, SCHULTE McMENAMIN, HUSSEY, ORR, AND BOUSE, 2016

Locality: Schomberg Quarry, Holzmaden, Baden-Wurttemberg State, Germany.

 Horizon:

 Biostratigraphy:

 Age: Lower Lias Epoch, Early Jurassic.

Material:

Private collection of P. Reiter: Skull and skeleton. Note: With a broken neck caused by a cephalopod?

_____________________________________________________________________________________
Species: conybeari LYDEKKER, 1888
Etymology: In honor of English geologist, palaeontologist and clergyman William Daniel Conybeare.
= Eurypterygius conybeari (LYDEKKER, 1888) HUENE, 1922

Holotype: NHMUK OR (old BMNH) 38523

Locality: Lyme Regis coast, Pinhay Bay- Charmouth, (SY 3291-SY 3794), Dorset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Upper Hettangian-Lower Sinemurian Stage, Lower Lias Epoch, Early Jurassic.

Material: Skull and incomplete skeleton.

Referred material:

BGS (old IGS) 956: Skull and skeleton.

 

= Ichthyosaurus communis BENNETT, BARRETT, COLLINSON, MOORE-FAY, DAVIS & PALMER, 2012

Locality: From a wave-cut platform, west of Westhay Water, Stonebarrow, east of Charmouth, Dorset County, England, Southern United Kingtom.

Horizon: Stonebarrow Marls Member, Charmouth Mudstone Formation.

Biostratigraphy: polymorphous Subzone, Jamesoni Zone.

Age: Lower Pliensbachian Stage, Lower Lias Epoch, Early Early Jurassic.

Material:

NHMUK R15907: Fragmentary skull and skeleton.

 

MASSARE & LOMAX, 2016

Locality: Beach at Doniford Bay, Watchet, Somerset County, England.

Horizon: Blue Lias Formation.

Biostratigraphy: bucklandi Zone.

Age: Lower Sinemurian Stage, Middle Lias Epoch, Early Jurassic.

Material:

NMW 93.5G.2: Practically complete, fully articulated specimen.

PATON, 1975

Locality: Lyme Regis coast, Pinhay Bay- Charmouth, (SY 3291-SY 3794), Dorset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Sinemurian Stage, Lower Lias Epoch, Early Jurassic.

Material:

RSM: 1 complete skeleton.

 

= Ichthyosaurus latimanus OWEN, 1840
Etymology:

Holotype:

Locality: Perhaps from a quarry from Nightcott, in the parish of Banwell, Somerset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Lias Epoch, Early Jurassic.

Material: Complete skeleton.

Referred material:

SPAMER, DAESCHLER, & VOSTREYS-SHAPIRO, 1995

ANSP 17456: Cast of type.

_____________________________________________________________________________________

Species: changduensis ZHAO, 1986
Etymology:

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

_____________________________________________________________________________________

Species: anningae LOMAX & MASSARE, 2015
Etymology: In honor of early paleontologist and fossil collector Mary Anning, whose hard work adn dedication brought among many other fossils, the ichthyosaurs from Lyme Regis, Dorset, to the attention of the scientific community.<
= Species Nova LOMAX & MASSARE, 2011

Holotype: DONMG:1983:98

Locality: Unknown, Charmouth Area, Dorset County, England, Southern United Kingdom.

Horizon: Stonebarrow Marl Member, Charmouth Mudstone Formation.

Biostratigraphy:

Age: Lower Pliensbachian Stage, Lower Lias Epoch, Early Jurassic.

Material: Skull, articulated cervical and dorsal vertebrae with ribs, a nearly complete pectoral girdle, and an articulated forelimb.

Referred material:

Locality: Unknown, Dorset County, England, Southern United Kingdom.

Horizon: Stonebarrow Marl Member, Charmouth Mudstone Formation.

Biostratigraphy:

Age: Lower Pliensbachian Stage, Lower Lias Epoch, Early Jurassic.

Material:

NMW G.1597: A partial skull with anterior centra and partial forefin.

 

Locality: Lyme Regis, Dorset County, England, Southern United Kingdom.

Horizon: Stonebarrow Marl Member, Charmouth Mudstone Formation.

Biostratigraphy:

Age: Lower Pliensbachian Stage, Lower Lias Epoch, Early Jurassic.

Material:

NHMUK OR 35566: A complete left forefin.

NHMUK OR 120,10028: Skull and skeleton.

_____________________________________________________________________________________

Species: larkini LOMAX, & MASSARE, 2016
Etymology: In honour of Nigel Larkin who has made substantial contributions to palaeontology, especially through his consveration work on marine reptiles. Our work has greatly benefited from his skills and attention to detail.

Holotype: BRSUG 25300

Locality: Walton, near Street, Somerset County, England, Southern United Kingdom.

Horizon: Blue Lias Formation.

Biostratigraphy: Pre-planorbis beds.

Age: Hettangian Stage, Lower Lias Epoch, Early Jurassic.

Material: A paractically complete skeleton comprising the skull, pectoral girdle, elemtns of both forefins, proximal hindfins, pelvic girdle, ribs, gastralia and teh vertebral column.

Referred material:

Locality: Street, Somerset County, England, Southern United Kingdom.

Horizon: Blue Lias Formation.

Biostratigraphy: Pre-planorbis beds.

Age: Hettangian Stage, Lower Lias Epoch, Early Jurassic.

Material:

SMC J59575: Composite skeleton with added posterior portion of skeleton (MASSARE, & LOMAX, 2016)

AGC 11: A nearly complete skeleton.

NHMUK PV OR5595: A nearly comlete skeleton, but not all of the limbs are authentic.

_____________________________________________________________________________________

Species: somersetensis LOMAX, & MASSARE, 2016
Etymology: In reference to the county of Somerset, in south-west England, where numerous specimens of Ichthyosaurus, including the holotype and referred specimens of I. somersetensis sp. nov., were discovered.
= Paramecostinus HAWKINS, 1840
= Ichthyosaurus intermedius OWEN, 1881
= Eurypterygius intermedius HUENE, 1922
= Ichthyosaurus communis McGOWN, 1974

Holotype: ANSP 15766

Locality: Possibly Glastonbury, Somerset County, England, Southern United Kingdom.

Horizon: Blue Lias Formation.

Biostratigraphy: Pre-planorbis beds.

Age: Hettangian Stage, Lower Lias Epoch, Early Jurassic.

Material: A practically complete skeleton comprising the skull, portions of the pectoral girdle, both forefins, portions of the pelvic girdle, both hindfins, ribs, gastralia, and an articulated vertebral column. 

Referred material:

 Locality: Street, Somerset County, England, Southern United Kingdom.

Horizon: Blue Lias Formation.

Biostratigraphy: Pre-planorbis beds.

Age: Hettangian Stage, Lower Lias Epoch, Early Jurassic.

Material:

BRSMG Cb4997: A farily complete skeleton.

NHMUK PV OR2013: A complete skeleton.

AGC 16: A fragmentary skeleton.

ROM 26029: A fragmentary skeleton.

 

LOMAX & SACHS, 2017

Locality: Doniford Bay, Watchet, Somerset County, England, Southern United Kingdom.

Horizon: Blue Lias Formation.

Biostratigraphy: Caloceras johnstoni Ammonite subzone, Psiloceras planorbis Ammonite zone.

Age: Hettangian Stage, Lower Lias Epoch, Early Jurassic.

Material:

NLMH 106234: Nearly complete skull and skeleton, mising the majority of its tail.

Note: Found with an embryo.