ammonites
Bakevellia (Maizuria) okuyamensis Nakazawa 1959 (clam)

Bivalvia - Ostreida - Bakevelliidae

Full reference: K. Nakazawa. 1959. Permian and Eo-Triassic Bakevellias from the Maizuru Zone, southwest Japan. Memoirs of the College of Science, University of Kyoto, Series B 26:193-213

Belongs to Bakevellia (Maizuria) according to A. S. Dagis et al. 1996

Sister taxa: Bakevellia (Maizuria) arctica, Bakevellia (Maizuria) bundiensis, Bakevellia (Maizuria) czekanowskii, Bakevellia (Maizuria) gebaliana, Bakevellia (Maizuria) kambei, Bakevellia (Maizuria) ladinica, Bakevellia (Maizuria) lapteviensis, Bakevellia (Maizuria) narawarensis, Bakevellia (Maizuria) nelegerensis, Bakevellia (Maizuria) rara, Bakevellia (Maizuria) reticularis, Bakevellia (Maizuria) subarctica, Bakevellia (Maizuria) varians

Ecology: stationary semi-infaunal suspension feeder

Average measurements (in mm): valve length 5.31