Prismatoolithus is an oogenus of dinosaur egg from the Cretaceous and possibly also the earliest Paleocene. They likely belonged to troodontids.

Sasayamagnomus is an extinct genus of neoceratopsian dinosaur from the Early Cretaceous Ohyamashimo Formation of Hyōgo Prefecture, Japan. The genus contains a single species, Sasayamagnomus saegusai.