Reference
Smith, A. S. 2015. Reassessment of ‘Plesiosaurus’ megacephalus (Sauropterygia: Plesiosauria) from the Triassic-Jurassic boundary, UK. Palaeontologia Electronica 18.1.20A, 1-20. https://doi.org/10.26879/504 palaeo-electronica.org/content/2015/1146-plesiosaurus-megacephalus