Kitakoyama boulder: Late Pliocene, Japan
collected 1971

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Angiospermae - Ericales - Ericaceae
Angiospermae - Aquifoliales - Aquifoliaceae
Angiospermae - Malvales - Tiliaceae
Angiospermae - Fagales - Betulaceae
Angiospermae - Fagales - Juglandaceae
Pinopsida - Pinales - Pinaceae
Pinopsida - Pinales - Taxodiaceae
Taxodiaceae indet. Saporta 1865
Osteichthyes - Testudines - Trionychidae
1 individual
unclassified
Gastropoda - Viviparidae
Viviparus sp. Montfort 1810
see common names

Geography
Country:Japan State/province:Mie
Coordinates: 34.8° North, 136.4° East (view map)
Paleocoordinates:34.6° North, 135.8° East (Wright 2013)
Basis of coordinate:based on nearby landmark
Altitude:88 meters
Geographic resolution:small collection
Time
Period: Neogene Epoch: Pliocene
Stage: Piacenzian 10 m.y. bin: Cenozoic 6
Key time interval: Late Pliocene
Age range of interval: 3.6 - 2.58 m.y. ago
Stratigraphy
Geological group:Agé Formation:Kameyama
Stratigraphic resolution:member
Stratigraphy comments: derivation from lower part of the Kameyama Formation is probable but not certain. Horizon considered to be the Stegodon elephantoides zone.
Lithology and environment
Primary lithology:fine,gray,blue siltstone
Includes fossils?Y
Lithology description: "The matrix containing the skull is bluish grey silt to fine-grained sand and is easily dispersed in water."
Environment:fluvial-lacustrine indet.
Geology comments: "fresh water" deposition based on gastropod fauna
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Preservation of anatomical detail:excellent
Articulated whole bodies:none
Associated major elements:some
Disassociated major elements:some
Fragmentation:occasional
Collection methods and comments
Collection methods:surface (float),field collection
Reason for describing collection:taxonomic analysis
Collection dates:1971
Metadata
Also known as:T. miensis type site
Database number:34496
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2003-09-03 15:12:39 Last modified:2025-02-22 15:12:02
Access level:the public Released:2003-09-03 15:12:39
Creative Commons license:CC0
Reference information

Primary reference:
9104.5% 29900Y. Okazaki and S. Yoshida. 1977. On a new fossil Trionyx from the Pliocene Age Group, Mie Prefecture, West Japan. Bulletin of the Mizunami Fossil Museum 4:87-95 [M. Carrano/M. Carrano/M. Uhen]