Where: Japan (36.4° N, 139.6° E: paleocoordinates 36.3° N, 116.3° E)
• coordinate based on nearby landmark
• hand sample-level geographic resolution
When: Paraentactinia nakatsugawaensis other zone, Spathian (251.3 - 247.2 Ma)
• bed-level stratigraphic resolution
Environment/lithology: basinal (siliceous); lithified radiolarite
Size class: microfossils
Collection methods: chemical, hydroflouric,
Primary reference: J. Isogawa, Y. Aita, and T. Sakai. 1998. Early Triassic radiolarians from the bedded chert in the Minowa quarry, Kuzuu Town, Tochigi Prefecture. News of Osaka Micropaleontologists, Special Volume 11:81-93 [W. Kiessling/W. Kiessling]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 95326: authorized by Wolfgang Kiessling, entered by Wolfgang Kiessling on 12.04.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
Protozoa | |
Hozmadia sp. Dumitrica et al. 1980 radiolarian | |
Cryptostephanidium sp. Dumitrica 1978 radiolarian | |
Tiborella agria Sugiyama 1992 radiolarian | |
Pseudostylosphaera sp. Kozur and Mostler 1981 radiolarian | |
Parentactinia nakatsugawaensis Sashida 1983 radiolarian [entered as Paraentactinia nakatsugawaensis]
| |
Spumellaria indet. Ehrenberg 1875 radiolarian | |
Pantanellium sp. Pessagno 1977 radiolarian |