Where: Japan (32.3° N, 130.3° E: paleocoordinates 44.6° N, 123.8° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Gannohana Member (Enokuchi Formation), Early/Lower Cenomanian (99.6 - 93.5 Ma)
• bed-level stratigraphic resolution
Environment/lithology: shoreface; lithified sandstone
•underlying Hokahira Member with a sharp erosional
•base (Locs. 2903, 1707), and is disconformably overlain
•by the Karakizaki Formation. The lower part (60–
•110 m thick) consists of several kinds of sandstones. It
•is mainly composed of fine- to medium-grained, trough
•and hummocky cross-stratified sandstone. Very finegrained
•sandstone predominates in the western part of
•Goshoura Island (Locs. 1811, 1822).
Size class: macrofossils
Preservation: shellbed
Primary reference: T. Komatsu and H. Maeda. 2005. Stratigraphy and fossil bivalve assemblages of the mid-Cretaceous Goshoura Group, southwest Japan. Paleontological Research 9(2):119-142 [M. Aberhan/D. Wellmanns]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 123163: authorized by Martin Aberhan, entered by Daniel Wellmanns on 13.01.2012
Creative Commons license: CC BY (attribution)
Taxonomic list
| Bivalvia | |
|
Pterotrigonia ogawai clam | |
|
Goshoraia crenulata venus clam | |
|
Anthonya japonica clam
Pachythaerus nagaoi clam | |
|
Lycettia sp. Cox 1937 mussel | |