Annaka City (Miocene of Japan)
Where: Gunma, Japan (36.3° N, 138.9° E: paleocoordinates 39.0° N, 136.4° E)
• coordinate based on political unit
When: Yoshii Formation (Tomioka Group), Middle Miocene (16.0 - 11.6 Ma)
Environment/lithology: marine; siltstone
Size class: macrofossils
Primary reference: M. Goto, F. Kobayashi, and S. Osawa. 1983. On a dentition of giant extinct shark, Carcharodon megalodon, from Annaka City, Gumma Prefecture, Japan (Preliminary report). Journal of the Geological Society of Japan 89(10):597-598 [C. Jaramillo/C. Pimiento/C. Pimiento]more details
PaleoDB collection 161520: authorized by Carlos Jaramillo, entered by Catalina Pimiento on 07.09.2014
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Chondrichthyes | |
"Carcharocles megalodon" = Otodus megalodon
"Carcharocles megalodon" = Otodus megalodon Agassiz 1835 megalodon 27 individual teeth. 21 teeth show good preservation, 11 teeth found in situ, 14 teeth from the original rock material
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