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
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, edited by Mark Uhen
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
Higotherium hypsodon n. gen. n. sp.
| |
Bivalvia | |
"Corbula subtumida n. sp." = Caestocorbula subtumida, Corbula (Cunaecorbula) kyushuensis n. sp.
"Corbula subtumida n. sp." = Caestocorbula subtumida Nagao 1928 clam
Corbula (Cunaecorbula) kyushuensis n. sp. Nagao 1928 clam | |
Gastropoda | |
Cylichna paupercula n. sp.
Cylichna paupercula n. sp. Nagao 1928 snail | |
Orthaulax japnicus snail | |
Turris higoensis n. sp.
Turris higoensis n. sp. Nagao 1928 turrid | |
| |
Cerithiopsis sp. Hanley 1849 snail | |
Faunus nipponicus n. sp.
Faunus nipponicus n. sp. Nagao 1928 snail | |
Turritella okadai Nagao 1928 turret shell | |
Nerita subgranulosa n. sp.
Nerita subgranulosa n. sp. Nagao 1928 snail |