Where: Hokkaido, Japan (43.5° N, 141.6° E: paleocoordinates 43.8° N, 140.3° E)
• coordinate stated in text
When: Tortonian (11.6 - 7.2 Ma)
• Based on these chronological information, Takano et al. [3] estimated the age of the Ichibangawa Formation (except the glauconite bed) to be approximately 11.5–10 Ma, and they also considered the uppermost glauconite bed of the Ichibangawa Formation to be around 10–9.5 Ma based on previous studies.
• bed-level stratigraphic resolution
Environment/lithology: marine; glauconitic sandstone
Size class: macrofossils
Primary reference: Y. Tanaka and N. Kohno. 2015. A New Late Miocene Odobenid (Mammalia: Carnivora) from Hokkaido, Japan Suggests Rapid Diversification of Basal Miocene Odobenids. PLoS One [M. Uhen/M. Uhen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 172573: authorized by Mark Uhen, entered by Mark Uhen on 11.08.2015
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
Archaeodobenus akamatsui n. gen. n. sp.
|