Fig. 3 in Jurassic and Cretaceous gastropods from hydrocarbon seeps in forearc basin and accretionary prism settings, California

Fig. 3. Hand sample and petrographic thin section (plane polarized light) occurrences of selected Mesozoic seep gastropod fossils, California, USA. A. Fossil coquina of Paskentana paskentensis from Bear Creek (site 4) carbonate pod. B. Thin section photomicrograph of Bathypurpurinopsis stantoni in clotted micrite with pore−filling fibrous cement, from Cold Fork of Cottonwood Creek (site 1). C. Longitudinal section through Paskentana paskentensis encased in early diagenetic (seafloor) anhedral yellow calcite cement (dark; cf. Campbell et al. 2002), with pores filled by lighter−colored fibrous cement, from Paskenta (site 2). D. Small individual of Paskentana paskentensis preserved in clotted micrite within serpulid worm tube; Bear Creek site (site 4).