Also known as Specimens collected along the Tamagawa coast at Noda village, Iwate Prefecture, northern Honshu, Japan (Kuji Group - Tamagawa Fm.)
Where: Japan (40.1° N, 141.8° E: paleocoordinates 53.5° N, 132.5° E)
• coordinate stated in text
When: Tamagawa Formation (Kuji Group), Turonian (93.9 - 89.8 Ma)
• Samples were from the middle part of the Tamagawa Formation.
•See Hırlamaya et al. 2021
Environment/lithology: marine; siltstone
•
•(In its basal part, the Tamagawa Formation is characterized by alluvial fan conglomerates with lacustrine mudstones. Above, the bulk of the formation comprises a few fluvial sequences consisting of sandstone and mudstone intercalating with lagoonal sandy mudstones and nearshore sandstones. Black carbonaceous siltstones and mudstones at this level often contain amber, rarely with some insects.)
Size class: microfossils
Preservation: original sporopollenin
Collection methods: surface (in situ), chemical, sieve,
• All specimens are deposited in the Department of Geology and Paleontology, National Science Museum (NSM-PP), Tokyo 169-0073, Japan.
Primary reference: M. Takahashi, P. R. Crane, and H. Ando. 2001. Fossil Megaspores of Marsileales and Selaginellales from the Upper Coniacian to Lower Santonian (Upper Cretaceous) of the Tamagawa Formation (Kuji Group) in Northeastern Japan. International Journal of Plant Sciences 162(2):431-439 [R. Lupia/T. Naeher/T. Naeher]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 32478: authorized by Rick Lupia, entered by Tiffany Naeher on 03.07.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
| Trileites | |
| Verrutriletes | |
| Polypodiopsida | |
|
Molaspora lobata Hall and Peake 1968 | |
| Erlansonisporites | |
| Bacutriletes | |