Aku River mouth: Early Miocene - Middle Miocene, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
see common names

Geography
Country:Japan State/province:Wakayama County:Shirahama
Coordinates: 33.7° North, 135.4° East (view map)
Paleocoordinates:33.4° North, 132.9° East (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period: Neogene Epoch: Miocene
10 m.y. bin: Cenozoic 5
Key time interval: Early Miocene - Middle Miocene
Age range of interval: 23.04 - 11.63 m.y. ago
Stratigraphy
Geological group:Tanabe
Lithology and environment
Primary lithology:medium sandstone
Secondary lithology: mudstone
Lithology description: medium-grained sandstone bed, which occurs in an interbedded succession of sandstone and massive mudstones
Environment:foreshore
Geology comments: mixed-flat to sand-flat settings of a tidal-flat
Taphonomy
Modes of preservation:trace
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:275389
Authorizer:M. Uhen Enterer:M. Uhen
Research group:vertebrate
Created:2025-09-29 08:26:46 Last modified:2025-09-29 08:26:46
Access level:the public Released:0000-00-00 00:00:00
Creative Commons license:
Reference information

Primary reference:
93134. M. Nara, S. Imai, and S. Fujino. 2025. Well-preserved Piscichnus waitemata in tidal-flat deposits of the Miocene Shirahama Formation, southwestern Japan and its ichnological, palaeoecological, and palaeontological implications. Ichnos 1-9 [M. Uhen/M. Uhen]

Secondary references:

92857eODP Y. Yanagisawa and F. Akiba. 1998. Refined Neogene diatom biostratigraphy for the northwest Pacific around Japan, with an introduction of code numbers for selected diatom biohorizons. The Journal of the Geological Society of Japan 104(6):395-414 [M. McClennen/M. McClennen]