Where: Japan (35.1° N, 135.2° E: paleocoordinates 32.4° N, 111.3° E)
• coordinate estimated from map
• hand sample-level geographic resolution
When: A. levis abundance zone and N. ornithoformis assemblage zone zone, Ajima Formation, Changhsingian (254.2 - 252.2 Ma)
• Early Changshingian
Environment/lithology: basinal (); lithified, cherty/siliceous mudstone
Size class: microfossils
Primary reference: Y. Sugamori. 2011. Late Permian radiolarians from the Ajima Formation of the Ultra-Tamba Terrane in the Sasayama area, southwest Japan. Palaeoworld 20:158-165 [J. Pálfy/A. Kocsis/A. Kocsis]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 131351: authorized by József Pálfy, entered by Adam Kocsis on 23.07.2012
Creative Commons license: CC BY (attribution)
Taxonomic list
Protozoa | |
Gustefana sp. Kozur 1993 radiolarian | |
Cauletella manica De Wever and Caridroit 1984 radiolarian
Triplanospongos angustus radiolarian | |
"Pseudoalbaillella spp." = Parafollicucullus, Pseudoalbaillella aff. longicornis
"Pseudoalbaillella spp." = Parafollicucullus Holdsworth and Jones 1980 radiolarian
Pseudoalbaillella aff. longicornis Ishiga and Imoto 1980 radiolarian | |
Neoalbaillella ornithoformis Takemura and Nakaseko 1981 radiolarian
Neoalbaillella cf. optima Ishiga et al. 1982 radiolarian
Albaillella levis Ishiga et al. 1982 radiolarian
Albaillella lauta Kuwahara 1992 radiolarian |