Kr 2-1 (Triassic of Japan)
Where: Aichi, Japan (35.5° N, 137.2° E: paleocoordinates 35.7° N, 113.9° E)
• coordinate estimated from map
When: Parentactinia nakatsugawaensis other zone, Spathian (251.3 - 247.2 Ma)
Environment/lithology: basinal (siliceous); chert
Size class: microfossils
Preservation: original silica
Collection methods: bulk,
Primary reference: A. Yao and K. Kuwahara. 1997. Radiolarian faunal change from Late Permian to Middle Triassic times (ぺルム紀新世から三畳紀中世にかけての放散虫群集の変遷). NOM, Spec 10:87-96 [W. Foster/W. Foster]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 220801: authorized by William Foster, entered by William Foster on 15.06.2021
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Protozoa | |
|
? Oertlispongus sp. Dumitrica et al. 1980 radiolarian | |
|
Pseudostylosphaera sp. Kozur and Mostler 1981 radiolarian | |
|
Polyentactinia sp. Foreman 1963 radiolarian | |
|
Parentactinia nakatsugawaensis Sashida 1983 radiolarian | |
"? Archaeothamnulus sp." = Triassothamnus
"? Archaeothamnulus sp." = Triassothamnus Kozur and Mostler 1981 radiolarian | |