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

Show authors, comments, and common names
Protozoa
 Latentifistularia -
Gustefana sp.
Gustefana sp. Kozur 1993 radiolarian
 Latentifistularia - Cauletellidae
Cauletella manica, Triplanospongos angustus
Cauletella manica De Wever and Caridroit 1984 radiolarian
 Albaillellaria - Follicucullidae
"Pseudoalbaillella spp." = Parafollicucullus, Pseudoalbaillella aff. longicornis
"Pseudoalbaillella spp." = Parafollicucullus Holdsworth and Jones 1980 radiolarian
Pseudoalbaillella aff. longicornis Ishiga and Imoto 1980 radiolarian
 Albaillellaria - Albaillellidae
Neoalbaillella ornithoformis, Neoalbaillella cf. optima, Albaillella levis, Albaillella lauta
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