Locality A, Ajima Formation, Ultra-Tamba Terrane (Permian of Japan)

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

 Albaillellaria - Albaillellidae
Albaillella levis Ishiga et al. 1982 radiolarian
Albaillella lauta Kuwahara 1992 radiolarian
Neoalbaillella cf. optima Ishiga et al. 1982 radiolarian
Neoalbaillella ornithoformis Takemura and Nakaseko 1981 radiolarian
 Albaillellaria - Follicucullidae
"Pseudoalbaillella spp." = Parafollicucullus Holdsworth and Jones 1980 radiolarian
Pseudoalbaillella aff. longicornis Ishiga and Imoto 1980 radiolarian
 Latentifistularia -
Gustefana sp. Kozur 1993 radiolarian
 Latentifistularia - Cauletellidae
Cauletella manica De Wever and Caridroit 1984 radiolarian