Atychodracon megacephalus

Species

A. megacephalus

Author

(Stutchbury, 1846)

Classification

Sauropterygia
Eosauropterygia
Eusauropterygia
Pistosauria
Plesiosauria
Plesiosauroidea
Rhomaleosauridae
Atychodracon

Age

Hettangian

Type location

Street-on-the-Fosse, a village about 14 km ENE of Street, Somerset, UK

Type specimen

BRSMG Cb 2335 (destroyed)

Referred material

Smith (2015) provided a list of referred material: LEICT G221.1851 (the neotype specimen) from Barrow-upon-Soar, Leicestershire, UK (Cruickshank, 1994a, 1994b); NMING F10194, a partial skeleton including the skull (but no mandible) from Street (Smith, 2007; Benson et al., 2012); NMING F8749, a partial skeleton including a damaged skull and suffering from pyrite decay, also from Barrow-upon-Soar (Smith, 2007). A complete skeleton from Wilmcote, Warwickshire, UK, sometimes referred to ‘P.’ megacephalus (WARMS G10875, Wright, 1860; Cruickshank, 1994a) represents a new species (Smith, 2007).

The type specimen (BRSMG Cb 2335) was a complete skeleton exposed in ventral view, but it was destroyed during the Blitz. Plaster casts of the skull and limb are housed in the Natural History Museum, London (NHMUK R1309/1310); the Geology Museum, Trinity College Dublin (TCD.47762a, TCD.47762b; Wyse Jackson, 2004) and in the British Geological Survey, Keyworth, Nottingham (BGS GSM 118410).