Where: Futaba, Japan (37.5° N, 141.0° E: paleocoordinates 49.1° N, 130.9° E)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Tamayama Formation (Futaba Group), Early/Lower Santonian (85.8 - 83.5 Ma)
• "Upper Futaba beds" [?= Tamayama Formation]
Environment/lithology: marine; muddy sandstone
•"The Upper Beds, which attain a maximum thickness of 220 m, are chiefly composed of a hard coarse-grained sandstone and a conclomerate with local intercalations of shale and sandy shale".
Size class: macrofossils
Collected by Shigeyasu Tokunaga in 1922-1926
Primary reference: S. Tokunaga and S. Shimizu. 1926. The Cretaceous Formation of Futaba in Iwaki and its fossils. Journal of Faculty of Science, Imperial University of Tokyo, Section 2 1:181-212 [R. Benson/R. Benson]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 150930: authorized by Roger Benson, entered by Roger Benson on 18.09.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Hamites "sp. B" Parkinson 1811 ammonite | |
Reptilia | |
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