Fig. 3 in Chemosynthesis-based associations on Cretaceous plesiosaurid carcasses

Fig. 3. Gastropods from the Late Cretaceous plesiosaur bones and seeps of Hokkaido, Japan. A, E, J. Provannidae gen. et sp. indet. 1 (UHR 33109m1, UHR 33109m2, and UHR 33109m3 respectively) from the Coniacian plesiosaurid bone association at Shirochiunezawa Creek (Haboro area), very similar to a new species of Desbruyeresia (B, C) from the Cenomanian methane seep deposits of Kanajirisawa Creek (Tappu area), UMUT MM29355 and UMUT MM29357 respectively (described in detail by Kaim et al. in press). C. Specimen UMUT MM29357 possesses a decollate protoconch typical of Provannidae. D. Provannidae gen. et sp. indet. 3 (UHR 33110m1) from the Turonian plesiosaurid bone association at Shirochiunezawa Creek, very similar to an undescribed provannid (I) from the Campanian methane seep deposits at Gakkonosawa Creek (Nakagawa area), UMUT MM29364; similar or the same species (K) is also found in the Coniacian plesiosaurid bone association at Shirochiunezawa Creek (Haboro area), UHR 33109m4. F. Provannidae gen. et sp. indet. 2 from Coniacian plesiosaurid bone association at Shirochiunezawa Creek (Haboro area), UHR 33109m5. G. Outer mould of vetigastropod gen. et sp. indet (UHR 33109m6) from Coniacian plesiosaurid bone association at Shirochiunezawa Creek (Haboro area), very similar to an ataphrid gastropod (H) from the Campanian methane seep deposits at Omagari (Nakagawa area), UMUT unregistered specimen.