Mauremys nipponica (Hirayama, Kaneko & Okazaki, 2007)

Nipponese pond turtle



Taxonomy & Nomenclature

Synonym/s: Ocadia nipponica Hirayama, Kaneko, and Okazaki, 2007:3


Conservation Status


Last record: Late Pleistocene



Honshu & Kyushu, Japan


Biology & Ecology










Original scientific description:

Hirayama, R., Kaneko, N. and Okazaki, H. (2007). Ocadia nipponica, a new species of aquatic turtle (Testudines: Testudinoidea: Geo-emydidae) from the Middle Pleistocene of Chiba Prefecture, central Japan. Paleontological Research 11: 1-19.


Other references:

Hasegawa, Y. et al. (2007). Nauman’s elephant and associated with Ocadia assemblage. In: Inuzuka, N. (Ed.). Jubilee Publication in Commemoration of Professor Kamei Tadao’s 80th Birthday, pp. 141-144.

Hirayama, R. and Isaji, S. (2010). Additional turtle fossils from the Kiyokawa Formation of the Shimosa Group (Middle Pleistocene) at Sodegaura City, Chiba Prefecture, Japan. Journal of the Natural History Museum and Institute, Chiba 11(1): 29-35.

Turtle Extinctions Working Group et al. (2015). Turtles and Tortoises of the World During the Rise and Global Spread of Humanity: First Checklist and Review of Extinct Pleistocene and Holocene Chelonians. Chelonian Research Monographs No. 5: 1-66.


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