Tsuno locality, Sambosan Accretionary Complex, Shikoku: Carnian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Rhodophyceae - Solenoporaceae
1 specimen
unclassified
Piallina bronnimanni Martini 1995
Piallina tethydis Rettori and Zaninetti 1993
Tubothalamea - Miliolida - Nubeculariidae
Tubothalamea - Miliolida - Milioliporidae
6 specimens
Involutinidae
Lituolida - Lituolidae
? Ammobaculites sp. Cushman 1910
Ammobaculites/Reophax
Strophomenata - Strophomenida - Strophomenidae
Sabellida - Serpulidae
Serpulidae indet. Rafinesque 1835
Polychaeta - Terebellomorpha
Anthozoa - Scleractinia
2 specimens
sp. 1
Anthozoa - Scleractinia - Reimaniphylliidae
7 specimens
Anthozoa - Scleractinia - Tropiastraeidae
2 specimens
Hydrozoa - Nigriporellidae
Tubiphytes sp. Maslov 1956
unclassified
Radiomura cautica Senowbari-Daryan and Schaefer 1979
? Isnella misiki Senowbari 2007
Demospongiae - Hadromerida - Celyphiidae
Celyphia zoldana Ott et al. 1980
1 specimen
Uvanella ? lamellata Senowbari-Daryan 1981
Demospongiae - Hadromerida - Polysiphonidae
5 specimens
Demospongiae - Agelasida - Milleporellidae
Demospongiae - Agelasida - Cryptocoeliidae
Cryptocoelia zitteli Steinmann 1882
1 specimen
Hormogoneae - Oscillatoriales - Girvanellaceae
Cyanophyceae - Garwoodiaceae
Wetheredellidae
? Koskinobullina socialis Cherchi and Schroeder 1979
see common names

Geography
Country:Japan
Coordinates: 33.5° North, 133.2° East (view map)
Paleocoordinates:16.6° North, 136.0° East (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period: Triassic Epoch: Late Triassic
Stage: Carnian 10 m.y. bin: Triassic 3
Key time interval: Carnian
Age range of interval: 237 - 227.3 m.y. ago
Stratigraphy
Stratigraphy comments: Ladinian?‑Carnian
Lithology and environment
Primary lithology: "reef rocks"
Lithology description: reef limestone blocks
Environment:reef, buildup or bioherm
Geology comments: The outcrop is situated in a small riverbed, which was dry in March 2012, 2
km north of the town of Tsuno (Tsuno district, Kochi prefecture). Reefal limestone blocks of tens of centimeters to few meters are embedded in green volcaniclastic and sparry calcite matrix. All of the collected blocks correspond to coral-sponge boundstone with minor amounts of microproblematica and algae. The preservation is good despite minor silicification. The taxonomic diversity is high (25 species were determined). The primary framebuilders (mainly corals and sponges) are encrusted by several generations of microbial crust and sessile organisms. There are a few voids with isopachous cements, and peloid-microproblematica grainstone-pack stone sediment and peloidal-clotted micrite fill the interstices between the skeletal elements
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Reason for describing collection:paleoecologic analysis
Metadata
Database number:173348
Authorizer:W. Kiessling Enterer:M. Krause
Research group:marine invertebrate
Created:2015-09-18 05:01:23 Last modified:2025-02-22 15:12:02
Access level:authorizer only Released:2015-12-18 05:01:23
Creative Commons license:CC0
Reference information

Primary reference:
56360. C. Peybernes, J. Chablais, and R. Martini. 2015. Upper Triassic (Ladinian?-Carnian) reef biota from the Sambosan Accretionary Complex, Shikoku, Japan. Facies 61(20) [W. Kiessling/M. Krause/M. Uhen]