Fig. 1. A in A mysterious giant ichthyosaur from the lowermost Jurassic of Wales

Fig. 1. A. Lithostratigraphy, biostratigraphy, and carbon-isotope stratigraphy of key Triassic–Jurassic sections illustrating the likely age of the specimen NMW95.61G.1 from Penarth, south Wales, UK. Organic and inorganic carbon isotope data of Penarth-Lavernock Point from Suan et al. (2012) and Korte et al. (2009); organic carbon isotope data of St. Audrie's Bay and Kuhjoch from Hesselbo et al. (2002) and Ruhl et al. (2009). The specimen was deposited several kyr after the end-Triassic mass extinction (initial neg. CIE = initial negative carbon-isotope excursion). Abbreviations: CM, Cotham Member; LM, Langport Member. B. Close-up photograph of the bivalve Palaeonucula navis (Piette, 1858) preserved in the embedding matrix of specimen NMW95.61G.1.