Coast at Akasemachi (Eocene of Japan)

Where: Japan (32.7° N, 130.5° E: paleocoordinates 40.1° N, 124.1° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Akasaki Formation, Lutetian (47.8 - 41.3 Ma)

• single specimen from "upper part of the Akasaki Formation (approximately 18m below the Lower Orthaulax Zone)... Most likely early Middle Eocene" (i.e., Lutetian)

• bed-level stratigraphic resolution

Environment/lithology: fluvial; gray, blue siltstone

• "nonmarine fluvial sediments"
• "gray-blue siltstone"

Size class: macrofossils

Primary reference: K. Miyata and Y. Tomida. 1998. A new tillodont from the early Middle Eocene of Japan and its implication to the subfamily Trogosinae (Tillodontia: Mammalia). Paleontological Research 2(1):53-66 [J. Alroy/J. Alroy/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 37601: authorized by John Alroy, entered by John Alroy on 17.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Cimolesta - Esthonychidae
Higotherium hypsodon n. gen. n. sp.
Higotherium hypsodon n. gen. n. sp. Miyata and Tomida 1998 tillodont
NSM-PV 20118 - holotype