Where: Okinawa, Japan (26.3° N, 127.9° E: paleocoordinates 27.4° N, 126.4° E)

When: Chinen Formation (Shimajiri Group), Neogene to Neogene (23.0 - 0.0 Ma)

• The geologic ages of the Shimajiri Group and the Chinen Formation are estimated to be Miocene to lower Pleistocene on the basis of the planktonic foraminiferal and calcareous nannofossil assemblages

Environment/lithology: marine; lithified, muddy sandstone

Size class: macrofossils

• The specimen measures 10.8 mm in total tooth height, 10.4 mm in total tooth width, 9.1 mm

•in crown height, 8.9 mm in crown width, 2.7 mm in crown thickness, and 8.4 mm in root length.

Primary reference: T. Tomita and K. Yokoyama. 2015. The First Cenozoic Record of a Fossil Megamouth Shark (Lamniformes, Megachasmidae) from Asia. Paleontological Research 19(3):204-207 [M. Uhen/C. McVicker/C. McVicker]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 227299: authorized by Mark Uhen, entered by Cathryn McVicker on 03.10.2022

Creative Commons license: CC BY (attribution)