Kamitombetsu, loc. 87070301: Santonian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Polycystinea - Spumellaria - Hagiastridae
Crucella sp. Pessagno 1971
Polycystinea - Spumellaria - Angulobracchiidae
Paronaella sp. Pessagno 1971
Polycystinea - Spumellaria
Polycystinea - Spumellaria - Praeconocaryommidae
Polycystinea - Spumellaria - Pseudoaulophacidae
Alievium gallowayi (White 1928)
Polycystinea - Spumellaria - Orbiculiformidae
Polycystinea - Nassellaria
Artostrobium urna Foreman 1971
Polycystinea - Nassellaria - Xitidae
Polycystinea - Nassellaria - Acropyramididae
Cornutella californica Campbell and Clark 1944
Polycystinea - Nassellaria - Amphipyndacidae
Amphipyndax stocki (Campbell and Clark 1944)
Polycystinea - Nassellaria - Archaeodictyomitridae
Dictyomitra formosa Squinabol 1904
see common names

Geography
Country:Japan State/province:Hokkaido
Coordinates: 44.9° North, 142.3° East (view map)
Paleocoordinates:49.0° North, 148.8° East (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period: Cretaceous Epoch: Late Cretaceous
Stage: Santonian 10 m.y. bin: Cretaceous 6
Key time interval: Santonian
Age range of interval: 85.7 - 83.6 m.y. ago
Stratigraphy
Geological group:Upper Yezo Formation:Regosawa
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: lithified mudstone
Secondary lithology: lithified siltstone
Environment:basinal (siliciclastic)
Taphonomy
Modes of preservation:body
Size of fossils:microfossils
Preservation of anatomical detail:good
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:95788
Authorizer:W. Kiessling Enterer:U. Merkel
Research group:micropaleontology
Created:2010-04-28 05:13:48 Last modified:2025-02-22 15:12:02
Access level:the public Released:2010-04-28 05:13:48
Creative Commons license:CC0
Reference information

Primary reference:
32537. K. Iwata, Y. Watanabe, and J. Tajika. 1992. Radiolarian biostratigraphic study of the Hakobuchi Group in the Nakatonbetsu area, north Hokkaido. Report of the Geological Survey of Hokkaido 63:1-21 [W. Kiessling/U. Merkel]