Makiyamaia decorata is an extinct species of sea snail, a marine gastropod mollusc in the family Clavatulidae.Fossilworks: Makiyamaia decorata
Distribution Fossils of this species were found in Eocene deposits in the Lower Snatolskaya Formation, Russia (age range 48.6 to 37.2 Ma).
References
A. E. Oleinik and L. Marincovich. 2003. Biotic response to the Eocene-Oligocene Transition: Gastropod assemblages in the High-Latitude North Pacific. From Greenhouse to Icehouse. The Marine Eocene-Oligocene transition. 36–56