This project focuses on fifteen potentially unpublished species of molluscan fossils—specifically gastropods and oysters—originating from the Sinop-Boyabat sedimentary basin in north-central Turkey. The intent is to identify each fossil in order to date the surrounding rocks, as paleontologists have discovered an unusual mammalian fossil fauna in close proximity. Marine sedimentary rocks from this region accumulated in a small rift basin connected to the Black Sea, and span from the early Cretaceous to the late Paleogene periods (140 to 30 million years ago). The invertebrate fossils were unearthed in the uppermost part of the sedimentary section consisting of shallow water coastal and reef limestones, and calcareous mudstones. Investigations in the Sinop-Boyabat have provided detailed rock descriptions, but additional clues gleaned from the invertebrate identifications will help determine a more temporally restricted age. The fossils must be identified to the generic level and, ideally, to the species level as well. Identification occurred in four stages. First, I separated each fossil in to the taxonomic classes, Bivalvia and Gastropoda. Then I separated them based on shell characteristics and markings such as whorl length, aperture shape and size, and the presence or absence of axial ridges, sutures, or an apex. Next, I took photos of the most intact specimens. The final step has been reading through the literature and attempting to find a fossil description that matches each group. This is the most challenging stage as we cannot find publications that describe any of our specimens. Thus, we are using texts focusing on European and East Asian fossil faunas, none of which include matching identifications. Throughout the search for applicable literature, it became clear that the Sinop-Boyabat invertebrate specimens have not been studied before and many are new species.