Itahana Flora Locality J: Tortonian - Messinian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Carpolithes japonicus
32 specimens
Angiospermae - Magnoliales - Magnoliaceae
Magnolia sp. Linnaeus 1753
1 specimen
Angiospermae - Fagales - Betulaceae
Carpinus heigunensis
10 specimens
Carpinus miocenica
34 specimens
Carpinus cf. japonica
2 specimens
Carpinus sp. Linnaeus 1753
1 specimen
Ostrya sp. Scopoli 1760
1 specimen
Alnus cf. japonica
1 specimen
Angiospermae - Fagales - Juglandaceae
Carya miocathayensis
63 specimens
Pterocarya asymmetrosa
1 specimen
Pterocarya protostenoptera
21 specimens
Angiospermae - Fagales - Fagaceae
Fagus palaeojaponica
3 specimens
Fagus stuxbergii
14 specimens
Fagus sp. Linnaeus 1753
1 specimen
Angiospermae - Rosales - Ulmaceae
Ulmus protojaponica
31 specimens
Zelkova ungeri Kovats 1865
6 specimens
Celtis hokiensis
4 specimens
Angiospermae - Rosales
Gleditsia miosinensis
1 specimen
Angiospermae - Rosales - Pomaceae
Malus sp. Miller 1758
2 specimens
Angiospermae - Rosales - Rosaceae
Spiraea protothunbergii
1 specimen
Angiospermae - Rosales - Papilionaceae
Sophora hokiana
2 specimens
Angiospermae - Rosales - Rhamnaceae
Berchemia miofloribunda Hu and Chaney 1940
1 specimen
Angiospermae - Fabales - Fabaceae
Cladrastis aniensis
1 specimen
Cladrastis inouei
1 specimen
Lespedeza sp. Michaux 1803
2 specimens
Caesalpinia hokiana
2 specimens
Angiospermae - Malpighiales - Salicaceae
Salix ksuzukii
4 specimens
Salix muraii
1 specimen
Salix parasachalinensis
7 specimens
Salix sp. Linnaeus 1753
6 specimens
Angiospermae - Sapindales - Sapindaceae
Acer nordenskioeldii
34 specimens
Acer sp. Linnaeus 1753
8 specimens
Acer protomiyabei Endo 1950
3 specimens
? Sapindus sp. Linnaeus 1753
3 specimens
Angiospermae - Vitales - Vitaceae
Vitis naumannii
11 specimens
Angiospermae - Ericales - Styracaceae
Halesia sp. Linnaeus 1759
35 specimens
Styrax cf. japonica
3 specimens
Angiospermae - Ranunculales - Menispermaceae
Cocculus sp. de Candolle 1817
4 specimens
Angiospermae - Dipsacales - Caprifoliaceae
Lonicera sp. Linnaeus 1753
5 specimens
Angiospermae - Aquifoliales - Aquifoliaceae
Ilex cf. serrata
1 specimen
Angiospermae - Lamiales - Oleaceae
Fraxinus sp. Linnaeus 1753
1 specimen
Angiospermae - Poales - Cyperaceae
Carex spp. Linnaeus 1753
3 specimens
Angiospermae - Poales - Poaceae
Gramineae indet. de Jussieu
9 specimens
Bambusites sp. Ettingshausen 1886
5 specimens
? Phragmites sp. Adanson 1763
5 specimens
Pinopsida - Pinales - Pinaceae
Pseudotsuga tanaii
1 specimen
Pseudolarix japonica
2 specimens
Pinus miocenica Tanai 1961
1 specimen
Coniferales - Cupressaceae
Metasequoia occidentalis Chaney 1951
1 specimen
see common names

Geography
Country:Japan State/province:Gunma
Coordinates: 36.3° North, 139.0° East (view map)
Paleocoordinates:37.6° North, 137.4° East
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Neogene Epoch: Miocene
Stage: Tortonian - Messinian 10 m.y. bin: Cenozoic 6
*Period:Late/Upper Tertiary *Epoch:Late/Upper Miocene - Early/Lower Pliocene
Key time interval: Tortonian - Messinian
Age range of interval: 11.63 - 5.333 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Tomioka Formation:Itahana
Stratigraphic resolution:bed
Stratigraphy comments: These beds are situated about 10 m above those of Loc. I.
Lithology and environment
Primary lithology: poorly lithified sandy sandstone
Lithology description: Above Loc. I are developed tuff breccia and several thin cyclothems.
Environment:marine indet.
Taphonomy
Modes of preservation:original carbon
Size of fossils:macrofossils
Temporal resolution:snapshot
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Collection method comments: Carya is most predominant in number of specimens, followed by Ulmus protojaponica, Carpinus miocenica, Halesia sp., Carpolithes japonicus, and Pterocarya protostenopteris. No species of evergreen broad leaved trees are found. Siltstone in the upper cyclothem yields poor fossils in three horixons, comprising only "Ficus" and Gramineae.
Metadata
Database number:21265
Authorizer:H. Sims Enterer:H. Lindon
Modifier:J. Cassara Research group:paleobotany
Created:2002-06-24 07:12:08 Last modified:2004-02-03 16:36:44
Access level:the public Released:2002-06-24 07:12:08
Creative Commons license:CC BY
Reference information

Primary reference:
6513. K. Ozaki. 1991. Late Miocene and Pliocene Floras in Central Honshu, Japan. Bulletin of Kanagawa Prefectural Museam Natural Science Special Issue 1-244 [H. Sims/H. Lindon/H. Lindon]