Where: Japan (32.3° N, 130.3° E: paleocoordinates 44.6° N, 127.0° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Arakuchizaki Member (Eboshi Formation), Albian (113.0 - 100.5 Ma)
• bed-level stratigraphic resolution
Environment/lithology: peritidal; lithified, graded sandstone and lithified, gray, red mudstone
•sists of tidal flat, channel and tidal sand bar deposits
•(Komatsu, 1999a).
•of sandstone and dark gray to black mudstone. The
•mudstone color gradually changes from dark gray
•through red and light green to dark gray mudstones
•toward the top of this member. The red and light
•green mudstones are massive. The dark gray mud-
•stone of the upper part contains lenticular to flaser
•beds with bidirectional current ripple laminations, but
•these laminations are generally obscured by intense
•bioturbations.
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 122274: authorized by Martin Aberhan, entered by Daniel Wellmanns on 20.12.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
| Bivalvia | |
|
Rastellum sp. Faujas-St.-Fond 1799 oyster | |
|
Cucullaea amaxensis clam | |
|
Arca tashiroi ark | |
|
Pholadomya japonica clam | |
|
Periplomya japonica clam
Cercomya sp. Agassiz 1843 clam | |
|
Goshoraia crenulata venus clam | |
|
Anthonya amakusensis clam | |
"Pterotrigonia pustulosa" = Pterotrigonia (Scabrotrigonia) pustulosa
"Pterotrigonia pustulosa" = Pterotrigonia (Scabrotrigonia) pustulosa Nagao 1930 clam | |