Hidaka Group, Naizawa Fm, Kerimai River (1), Japan: Carnian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Stenolaemata - Trepostomida - Stenoporidae
R
Stenolaemata - Trepostomida - Dyscritellidae
R
R
Stenolaemata - Trepostomata - Heterotrypidae
Leioclema sp. Ulrich 1882
R
see common names

Geography
Country:Japan
Coordinates: 42.2° North, 142.8° East (view map)
Paleocoordinates:22.4° North, 146.6° East (Wright 2013)
Basis of coordinate:based on nearby landmark
Time
Period: Triassic Epoch: Late Triassic
Stage: Carnian 10 m.y. bin: Triassic 3
*Period:Late/Upper Triassic
*International age/stage:Early/Lower Carnian
Key time interval: Carnian
Age range of interval: 237 - 227.3 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Hidaka Formation:Naizawa
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: lithified "limestone"
Includes fossils?Y
Lithology description: small limestone lens, pale reddish brown to pale brownish gray in color, including reddish brown to green hyaloclastitic fragments in part. The bryozoans occur in the massive part of the limestone.
Environment:marine indet.
Taphonomy
Size of fossils:mesofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Taxonomic list comments:R = rare
VA = very abundant
Metadata
Also known as:DESC-79012a, DESC-79010, DESC-79014, DESC-79013
Database number:32671
Authorizer:D. Bottjer Enterer:C. Powers
Modifier:C. Powers Research group:marine invertebrate
Created:2003-07-11 15:47:40 Last modified:2025-02-22 15:12:02
Access level:authorizer only Released:2005-07-11 15:47:40
Creative Commons license:CC0
Reference information

Primary reference:
8783. S. Sakagami and A. Sakai. 1979. Triassic bryozoans from the Hidaka Group in Hokkaido, Japan. Trans. Proc. Palaeont. Soc. Japan, N. S. 114:77-86 [D. Bottjer/C. Powers/C. Powers]