Unuma (Triassic of Japan)

Where: Gifu, Japan (35.4° N, 137.0° E: paleocoordinates 38.9° N, 114.6° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Anisian (247.2 - 242.0 Ma)

• 6 samples (SMT07, SMT06, SMT05, 1704, SMT02, SMT01)

• bed-level stratigraphic resolution

Environment/lithology: basinal (siliceous); lithified chert

• red and gray-black bedded chert

Size class: microfossils

Primary reference: S. Mizutani and T. Koike. 1982. Radiolarians in the Jurassic siliceous shale and in the Triassic bedded chert of Unuma, Kagamigahara City, Gifu Prefecture, central Japan. News of Osaka Micropaleontologists, Special Volume 5:117-134 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 96065: authorized by Wolfgang Kiessling, entered by Uta Merkel on 11.05.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Radiolaria
 Nassellaria - Ruesticyrtiidae
Triassocampe "sp. A" Dumitrica et al. 1980 radiolarian
Triassocampe scalaris Dumitrica et al. 1980 radiolarian
 Entactinaria - Heptacladidae
Heptacladus cf. crassispinus Dumitrica et al. 1980 radiolarian
 Entactinaria - Pentactinocarpidae
Pentactinocarpus cf. acanthicus Dumitrica 1978 radiolarian
 Entactinaria - Hindeosphaeridae
"Archaeospongoprunum spinulosum" = Hindeosphaera spinulosa, "Staurodoras variabilis" = Parasepsagon variabilis, "Archaeospongoprunum japonicum" = Pseudostylosphaera japonica, "Archaeospongoprunum compactum" = Pseudostylosphaera compacta, "Archaeospongoprunum tenue" = Pseudostylosphaera tenuis
"Archaeospongoprunum spinulosum" = Hindeosphaera spinulosa Nakaseko and Nishimura 1979 radiolarian
"Staurodoras variabilis" = Parasepsagon variabilis Nakaseko and Nishimura 1979 radiolarian
"Archaeospongoprunum japonicum" = Pseudostylosphaera japonica Nakaseko and Nishimura 1979 radiolarian
"Archaeospongoprunum compactum" = Pseudostylosphaera compacta Nakaseko and Nishimura 1979 radiolarian
"Archaeospongoprunum tenue" = Pseudostylosphaera tenuis Nakaseko and Nishimura 1979 radiolarian
 Spumellaria -
 Spumellaria - Actinommidae
Acanthosphaera sp. Ehrenberg 1859 radiolarian
 Spumellaria - Xiphostylidae
? Tripocyclia "sp. A" Haeckel 1881 radiolarian
? Tripocyclia "sp. B" Haeckel 1881 radiolarian
 Spumellaria - Pantanelliidae
Capnodoce sp. De Wever 1979 radiolarian