Where: Hokkaido, Japan (42.8° N, 143.8° E)
• Paleocoordinates: 42.9° N, 140.8° E (Wright 2013)
• coordinate stated in text
When: Ishiizawa Sandstone Member (Okoppezawa Formation), Langhian (16.0 - 13.8 Ma)
• Tanaka et al. [22] considered the geological age of the lower part of the Ishiizawa Sandstone Member where the holotype was obtained to be 16.3–13.5 Ma (the early middle Miocene) based on diatoms (Denticulopsis praelauta∼D. hyalina) [31] and nannofossils (N8–N13) [32] (figure 1).
Environment/lithology: marine; sandstone
Size class: macrofossils
Primary reference: W. Tonomori, H. Sawamura, T. Sato and N. Kohno. 2018. A new Miocene pinniped Allodesmus (Mammalia: Carnivora) from Hokkaido, northern Japan. Royal Society Open Science 5(5):172440 [M. Uhen/E. Holliday/M. Uhen]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 188758: authorized by Mark Uhen, entered by Michael Hudgins on 16.09.2017, edited by Mark Uhen
Creative Commons license: CC0 (CC0)
Taxonomic list
Mammalia | |
Allodesmus uraiporensis n. sp.
Allodesmus uraiporensis n. sp. Tonomori et al. 2018 pinniped |