Koyamada, Soma area: Oxfordian - Kimmeridgian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Demospongiae - Agelasida - Milleporellidae
unclassified
Anthozoa - Scleractinia - Haplaraeidae
Eguchi 1951
Eguchi 1951
Anthozoa - Scleractinia - Stylinidae
? Goniocora sp. Milne-Edwards and Haime 1851
Anthozoa - Scleractinia - Heterocoeniidae
Acanthogyra sp. Ogilvie 1897
Anthozoa - Scleractinia - Astrocoeniidae
Astrocoenia sp. Milne-Edwards and Haime 1848
    = ? Astrocoenia sp. Milne-Edwards and Haime 1848
Kiessling 2014
Anthozoa - Scleractinia - Aplosmiliidae
Eguchi 1951
Anthozoa - Scleractinia - Thamnasteriidae
Thamnasteria sp. LeSauvage 1823
Anthozoa - Scleractinia - Thecosmiliidae
Eguchi 1951
Anthozoa - Scleractinia - Eugyridae
Anthozoa - Scleractinia - Montlivaltiidae
? Montlivaltia sp. Lamouroux 1821
Anthozoa - Scleractinia - Latomeandridae
Eguchi 1951
Anthozoa - Scleractinia - Stylinidae
Rhynchonellata - Terebratulida - Terebratulidae
see common names

Geography
Country:Japan State/province:Fukushima
Coordinates: 37.7° North, 141.0° East (view map)
Paleocoordinates:56.5° North, 152.6° East (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period: Jurassic Epoch: Late Jurassic
Stage: Oxfordian - Kimmeridgian 10 m.y. bin: Jurassic 5 - Jurassic 6
Key time interval: Oxfordian - Kimmeridgian
Age range of interval: 161.5 - 149.2 m.y. ago
Stratigraphy
Geological group:Somanakamura Formation:Nakanosawa Member:Koike
Stratigraphic resolution:group of beds
Stratigraphy comments: upper part of the formation
Lithology and environment
Primary lithology: lithified grainstone
Secondary lithology: lithified lime mudstone
Lithology description: dark-gray impure limestones, often with shaly and sandy intercalations, very fossiliferous
Environment:shallow subtidal indet.
Geology comments: no bioherms or biostromes
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:85574
Authorizer:W. Kiessling Enterer:U. Merkel, W. Kiessling
Modifier:U. Merkel Research group:marine invertebrate
Created:2009-01-12 05:13:09 Last modified:2025-02-22 15:12:02
Access level:authorizer only Released:2010-01-08 10:39:56
Creative Commons license:CC0
Reference information

Primary reference:
28948. K. Mori. 1963. Geology and paleontology of the Jurassic Somanakamura Group, Fukushima Prefecture, Japan. The Science Reports of the Tohoku University, Geology 35(1):33-65 [W. Kiessling/U. Merkel/U. Merkel]

Secondary references:

30709 M. Eguchi. 1951. Mesozoic hexacorals from Japan. The Science Reports of the Tohoku University, Geology 24:1-96 [W. Kiessling/U. Merkel]
52446 W. Kiessling. 2014. Taxonomic revisions of scleractinian corals. [W. Kiessling/W. Kiessling]