Genus: Leptonectes McGOWAN, 1996
Etymology: Greek, leptos, "slender" and Greek, nektes, "swimmer."
= Leptopterygius HUENE 1922 non Leptopterygius TROSCHEL, 1860 (a fish)
Etymology: Greek, leptos, “slender”, Greek, pterygion, “fin” + us: Slinder fin.
= Strongylostinus HAWKINS, 1840
Etymology:

Species: tenuirostris (CONYBEARE 1822) McGOWAN, 1996
Etymology: Latin, tenius, "narrow, thin" and Latin, rostris, "snout."
= Ichthyosaurus tenuirostris CONYBEARE 1822
= Leptopterygius tenuirostris (CONYBEARE, 1822), HUENE, 1992

Holotype: Lost.

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

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Jurassic?

Material: Tooth.

Neotype: IGS 51236

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

Horizon:

Biostratigraphy:

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

Material: Skull and skeleton.

BMNH R498: Skull and skeleton.

OUM J10305: Skull and fragmentary skeleton.

SCM 8372: Skull and skeleton.

Referred material:

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:

BMNH R.38522: Nearly complete skeleton.

BMNH R1211: Nearly complete skeleton.

BMNH R1126, 40348: Nearly perfect skulls.

Dorset County Museum G.4, G.5:

Specimens at the Osvord University Museum.

VINCENT, TAQUET, FISCHER, BARDET, FALCONNET, & GODEFROIT, 2014

MNHN AC 9937: A partial postcranial skeleton including 20 presacral vertebrae, ribs, pectoral girdle, both humeri, ulnae, radii and femora.

 

= Leptopterygius cf. tenuirostris

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:

BMNH 32396: A small left scapula.

BMNH 2036: A slab with coracoids and anterior portion of a vertebral column.

BMNH 1189: A slab with coracoids.

 

DELAIR, 1974

Locality: Barnstone Cement Company's pit, 1 mile west of Barnstone Church, Nottinghamshire County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Jurassic.

Material:

VR 57: Right humerus, radius, ulna of a moderately sized right limb.

 


Locality: Found in an old quarry adjacent to Tengrove Lane, near Upton, Somersetshire County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Jurassic.

Material:

Mr. L. Walrond private collection: Humerus, ulna and radius.

 

GODEFROIT, 1992

Locality: Differt, Lorraine, Belgium.

Horizon:

Biostratigraphy:

Age: Middle Lias Epoch, Middle Early Jurassic.

Material:

IRSNB R121: Humerus, radius and ulna.

 

LOMAX & MASSARE, 2012

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

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Jurassic.

Material:

CAMSM J 35279: Fragmentary skull and fragmentary skeleton with two embryo's (CASM J 35718).

LYDEKKER, 1891

Locality: A quarry near Overleigh, Street, Somerset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Jurassic.

Material:

BMNH XI: Skull and skeleton.

 

= Leptonectes cf. tenuirostris MAISCH & MATZKE, 2003

Locality: Lyme Regis, Dorset County, England.

Horizon:

Biostratigraphy:

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

Material:

MBI 007: 3-dimensional skull lacking most of the snout.

 

MAISCH & REISDORF, 2006

Locality: Claystone pit, Unter Hauenstein, Switzerland.

Horizon: Kondensiertes Pliensbachium.

Biostratigraphy:

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

Material:

NMO 26575: SKull, and postcranial skeleton and two phalanges of a juvenile.

 

MARTIN, FREY & REISS, 1986

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

Horizon:

Biostratigraphy:

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

Material:

Leicestershire Museum, OS 90.1953: Near-complete skeleton with partial body outline in neck, forelimb, rear dorsal and base of tail regions.

 

McGOWAN, 1989

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

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Jurassic.

Material:

BGS 51236: Skull and skeleton, the authenticity of the material is in question.

GTS L/AG/ARCH/18: Near complete skeleton.

BATGM M3560: Fragmentary skeleton it may be Ichthyosaurus communis.

BATGM M3558: Fragmentary skeleton possibly a composite skeleton.

BATGM M3568: Fragmentary skeleton possibly with an Ichthyosaurus communis skull.

BATGM M3575: Fragmentary skeleton with an incomplete Ichthyosaurus communis skull.

BATGM M3564: Fragmentary skeleton that has been tampered with.

BATGM M3552, PAS 17307: Skulls and skeletons.

BATGM M3356, BATGM M3565: Partial skeletons.

BATGM M3566: Incomplete skeleton.

BATGM M3573, R1123, 38709, R1120, GTSL.AG.ARCH.7: Fragmentary skeletons.

OUM J10319: Fragmentary skeleton probably composite skeleton.

 

McGOWAN, 1974

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

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Lower Early Jurassic.

Material:

BMNH R498: Fragmentary skeleton possibly tampered with.

 

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

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Early Jurassic.

Material:

BMB C2: Fragmentary skeleton possibly tampered with.

 

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

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Jurassic.

Material:

WM 527: Skull and skeleton.

 

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

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Jurassic.

Material:

LEICS OS.90.1953: Skull and skeleton.

 


Locality: Pinhay Bay, just west of Lyme Regis, in the adjoining county of Devon, Dorset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Jurassic.

Material:

DLR '002': Skull and skeleton.

 

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: 172: Skull and nearly complete skeleton.

ROYAL COLLEGE OF SURGEONS: 174: Tooth.

 


Locality: I miles for the limestone quarry in Bath, on the lower Bristol road, about the 6 feet below the turf in a stratum of rubble, Gloucestershire County, England, Southern United Kingdom.

Horizon: Oolite.

Biostratigraphy:

Age: Early Jurassic.

Material:

ROYAL COLLEGE OF SURGEONS: 173: Nearly complete lower jaw.

 

OWEN, 1881

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:

BMNH R1120: Skull and skeleton.

 

REIFF, 1935, MAISCH, 1999

Locality: Alpha-Olschiefer, Dusslingen, Baden-Wurttemberg State, Germany.

Horizon:

Biostratigraphy: Tuberculateus zone.

Age: Early Jurassic.

Material:

Tubingen Geol. Uinv. Inst; GPIT/Re/400: Skull, right humerus, coracoid, interclavicle, clavicle fragment ribs and teeth.

Tubingien Geol. Univ. Inst: Dorsal vertebrae.

 


Locality: Ofterdingen, Baden-Wurttemberg State, Germany.

Horizon:

Biostratigraphy: Tubrculatus zone.

Age: Early Jurassic.

Material:

Tubingen Geol. Uinv. Inst: Dorsal vertebrae.

 


Locality: Malsch, Baden-Wurttemberg State,, Germany.

Horizon: Doppelfels.

Biostratigraphy: Kuperfel zone.

Age: Late Triassic?

Material:

Karlsruhe bad. Landessammlung F. Naturde: Dorsal and caudal vertebrae.

 

= Leptopterygius cf. tenuirostris REIF

Locality: Vaihingen, Baden-Wurttemberg State, Germany.

Horizon: Angulatenton, Unter.

Biostratigraphy:

Age: Early Jurassic.

Material:

Stuttgart Naturaliensammlung: Femur.

Stuttgart Naturaliensammlung: Dorsal vertebrae.

 

= Ichthyosaurus grandipes SHARPE, 1830
Etymology:

Holotype:

Locality: 4 miles from Stratford-upon-Avon, Warwickshire County, England, Southern United Kingdon.

Horizon:

Biostratigraphy:

Age: Lias Epoch, Early Jurassic.

Material: Partial skeleton.

 

= Ichthyosaurus chirostrongulostinus HAWKINS, 1834
Etymology:

Holotype: BMNH 2009

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

Horizon:

Biostratigraphy:

Age: Lower Lias Epoch, Early Jurassic.

Material: Skull.

 

= Ichthyosaurus strongylostinus HAWKINS, 1834
Etymology:
= Strongylostinus HAWKINS, 1840

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

_____________________________________________________________________________________

Species: acutirostris (OWEN, 1840) HUENE, 1922
Etymology: Latin, acutirostris, "sharp beak."
= Ichthyosaurus acutirostris OWEN, 1840
= Stenopterygius acutirostris (OWEN, 1840)

Holotype: BMNH 14553

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

Horizon:

Biostratigraphy:

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

Material: Skull.

Referred material:

BMNH 15500a, 36876, 39454:

WMY 5, 2546S, 876S, 878S: Skulls and skeletons.

WMY 877S: Skull with some post-cranials.

WMY 876S(H1), BMNH 1500a: Skulls.

 

BENTON & TAYLOR, 1983/OWEN, 1840

Locality: Hawsker Bottoms, Yorkshire County, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Lias Epoch, Early Jurassic.

Material:

WM 2546S:


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

Horizon:

Biostratigraphy:

Age: Lias Epoch, Early Jurassic.

Material:

MM unnumbered:

WM 876S:

 


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

Horizon:

Biostratigraphy:

Age: Lias Epoch, Early Jurassic.

Material:

BMNH R5791:

 

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

Horizon:

Biostratigraphy:

Age: Lias Epoch, Early Jurassic.

Material:

WM 5m:

 

= Ichthyosaurus longipennis MANTELL, 1851
Etymology:

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

 

= Ichthyosaurus zetlandicus SEELEY, 1880
Etymology:
= Stenopterygius zetlandicus (SEELEY, 1880) HUENE, 1922

Holotype: Sedgwick Museum, SMC J35176

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

Horizon:

Biostratigraphy:

Age: Upper Lias Epoch, Late Early Jurassic.

Material: Partial skull.

Referred material:

HUENE, 1922

Locality: Holzmaden, Baden-Wurttemberg State, Germany.

Horizon:

Biostratigraphy:

Age: Upper Lias Epoch, Late Early Jurassic.

Material:

Number: Not given: Skull and skeleton.

Number: Not given: Skull and skeleton.

Number: Not given: Scapula and coracoid.

Number: Not given: Scapula.

 


Locality: Normandy, France.

Horizon:

Biostratigraphy:

Age: Upper Lias Epoch, Late Early Jurassic.

Material:

Number: Not given: Skull.

BMNH R 32699: Coracoid.

 

Locality: Banz, northern Bayern (Bavaria) State, Germany.

Horizon:

Biostratigraphy:

Age: Upper Lias Epoch, Late Early Jurassic.

Material:

Skull.

Teeth.

Humerus.

Other fragmentary skeletal elements.

 

= Stenopterygius zetlandicus DECHASEAUX
Etymology:

Locality: Curey, Normandy, France.

Horizon:

Biostratigraphy:

Age: Lias Epoch, Early Jurassic.

Material:

Number: Not given: Fragmentary skull.


NON Ichthyosaurus acutirostris FRAAS, 1891
NON Leptopterygius acutirostris HAUFF, 1853

_____________________________________________________________________________________

Species: margaritatus (HUENE, 1922) (nomen dubium)
Etymology:
= Leptopterygius margaritatus HUENE, 1922 (nomen dubium)

Holotype: SMNS 4147

Locality: Eislingen, Baden-Wurttemberg State, Germany.

Horizon:

Biostratigraphy:

Age: Upper Pliensbachian Stage, Middle Lias Epoch, Middle Early Jurassic.

Material: 10 vertebrae.

Referred material:

GPIT 10757: Tooth.

_____________________________________________________________________________________

Species: solei (McGOWAN, 1993) McGOWAN, 1996
Etymology:
= Leptopterygius solei McGOWAN, 1993

Holotype: BRSMG Ce 9856

Locality: Western flank of Stonebarrow, the coastal cliff that lies just east of the River Char (national Grid Reference SY 370929), Lyme Regis coast, Pinhay Bay- Charmouth, Dorset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy: Caenisites obtusum zone.

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

Material: Skull and nearly complete skeleton.

Note: An unusual central prominence and associated groove extending to the periphery of the flattened humeral head may be pathological (PARDO-PEREZ, KEAR, GOMEZ, MORONI & MAXWELL, 2018).

Referred material:

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

Horizon:

Biostratigraphy: Arnioceras semicostatum zone.

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

Material:

MHN 96270 (DLR "001" McGOWAN, 1989): Skull and skeleton.

_____________________________________________________________________________________

Species: moorei McGOWAN & MILNER, 1999
Etymology: In honor of Mr. Chris Moore, who discovered the specimen.

Holotype: BMNH R 14370

Locality: Foreshore , just to the west of Seatown, Dorset County, England, Southern United Kingdom.

Horizon:

Biostratigraphy: Uppermost part of the Belemnite Marls, 1 meter below the Beleminite Stone Band.

Age: Lower Pliensbachian, close to the top of the Lower Lias Epoch, Early Jurassic.
Material: An incomplete skeleton comprising the skull, fore paddles and anterior trunk.