Also known as Yoh Ohe
Where: Yamagata, Japan (38.3° N, 140.2° E: paleocoordinates 39.9° N, 138.4° E)
• coordinate stated in text
When: Hashigami Sandstone Member (Hongo Formation), Tortonian (11.6 - 7.2 Ma)
• Denticulopsis katayamae diatom zone, 9.0 to 10.4 Ma, late Miocene
Environment/lithology: marine; medium-grained sandstone
Size class: macrofossils
Preservation: original phosphate
Primary reference: S. Takahashi, D. P. Domning, and T. Saito. 1986. Dusisiren dewana, n. sp. (Mammalia: Sirenia), a new ancestor of Stellers sea cow from the upper Miocene of Yamagata prefecture, northeastern Japan. Transactions and Proceedings of the Palaeontological Society of Japan N. S. 141:296-321 [M. Uhen/M. Uhen]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 71537: authorized by Mark Uhen, entered by Mark Uhen on 27.04.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
Dusisiren dewana n. sp.
Dusisiren dewana n. sp. Takahashi et al. 1986 dugong | |
Cetacea indet. Brisson 1762 whale | |
Chondrichthyes | |
"Carcharodon megalodon" = Otodus megalodon
"Carcharodon megalodon" = Otodus megalodon Agassiz 1835 megalodon |