Genus: Atychodracon SMITH, 2015
Etymology: Greek, atychis, "unfortunate"; chosen because the holotype material
of the type species was destroyed during a WWII air raid in 1940, and Greek,
drakon, "dragon."
Species: megacephalus (STUTCHBURY, 1846) SMITH, 2015
Etymology: Greek, mega, "large" and Greek, kephale, "head."
= Plesiosaurus megacephalus STUTCHBURY, 1846
= Plesiosaurus megacephalus (sic) recte megacephalus STUTCHBURY,
1846, ANON, 1851
= Thaumatosaurus megacephalus (STUTCHBURY,
1846) LYDEKKER, 1889
= Eurycleidus megacephalus (STUTCHBURY,
1846) ANDREWS, 1922
= Rhomaleosaurus megacephalus (STUTCHBURY,
1846) CRUICKSHANK, 1994
Holotype: BRSMG Cb2335
Locality: Street on Fosse, Somersetshire County, England, Southern United Kingdom.
Horizon:
Biostratigraphy: Schlotheimia angulata zone?.
Age: Sinemurian Stage, Lower Lias Epoch, Early Early Jurassic.
Note: Lower Hettangian planorbis Zone of Barrow, STORRS, 1994.
Material: Skull and skeleton.
Note: Lost.
= Atychodracon megacephalus (STUTCHBURY, 1846) SMITH, 2015
Etymology
Neotype: LEICS G221.1851
Locality: Barrow upon Soar, NGR SK 57 17, Leicestershire County, England, Southern United Kingdom.
Horizon: Bottom Floor Limestone.
Biostratigraphy:
Age: Sinemurian Stage, Lias Epoch, Early Jurassic.
Material: Skull and skeleton.
Referred material:
CRUICKSHANK, 1994
WARMS G10875: Fragmentary skeleton.
NMING F10194: Skull and fragmentary skeleton.
= Thaumatosaurus megacephalus (STUTCHBURY, 1846) HUENE, 1921
Locality: Baden-Wurttemberg State, Germany.
Horizon:
Biostratigraphy:
Age: Lower Lias Epoch, Early Jurassic.
Material:
INV. No. 18771: Fragmentary left ischium and vertebrae.
PERSSON
Locality: Kanonenberg, near Halberstadt, Saxony-Anhalt State, North Central Germany.
Horizon:
Biostratigraphy: Psilocers planorbe zone.
Age: Lower Lias Epoch, Early Early Jurassic.
Material:
Number: Not given: Skull and skeleton.
cf. megacephalus REIFF
Locality: Pfrondorf, Baden-Wurttemberg State, Germany.
Horizon: Psilontenkalk.
Biostratigraphy:
Age: Early Jurassic.
Material:
Tubingen Geol. Univ.-Inst: Left ischium.
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