Pelagosaurus yakanga yakanyatsogadziriswa nehupenyu hwemvura; yakanga yakagadzira muswe murefu, wakanyatsogadziriswa, muswe une zvipfeko zvakafanana nemapapiro uye maoko akafanana nemapuranga ekudya mumvura inodziya, isina mvura yenguva yayo. Pelagosaurus yakanga ine mazino makumi matatu akakodzera kuvhima nekubata hove, crustaceans uye zvipembenene pavanenge vachishambira; zvirokwazvo, imwe fossil specimen yakawanikwa neLeptolepis<unk> hove yekutanga teleost<unk> mumatumbu ayo. Maziso ayo akatarisana mberi uye muviri wakanyatsogadziriswa unoratidza kuti Pelagosaurus yakanga iri mhuka inodya, panzvimbo pemunhu anodya nyama kana muvhimi. Pelagosaurus yaive yakaratidzwa zvakafanana nemakorokodho emazuva ano, uye ingadai yakashambira nenzira, ichirova muswe kubva kudivi rayo, kunyangwe yaive ichibvumira ma veterans ayo kuti agone nekubata hove, crustaceans uye zvipembenene paanenge achishambira; zvirokwazvo, imwe fosi yakawanikwa yakawanikwa yaka
mhuka inodya mhuka inodzingirira