PBDB Collection

Minowa Quarry, YZH section, Kuzuu, samples 36-42: Anisian, Japan

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Protozoa - Entactinaria - Palaeoscenidiidae

	Parentactinia nakatsugawaensis Sashida 1983
Protozoa - Entactinaria - Hindeosphaeridae

	Pseudostylosphaera sp. Kozur and Mostler 1981

	Pseudostylosphaera compacta (Nakaseko and Nishimura 1979)

	Pseudostylosphaera longispinosa Kozur and Mostler 1981

	Pseudostylosphaera tenuis (Nakaseko and Nishimura 1979)

	Pseudostylosphaera japonica (Nakaseko and Nishimura 1979)

	Pseudostylosphaera spinulosa (Nakaseko and Nishimura 1979)
Protozoa - Entactinaria - Entactiniidae

	Entactinosphaera sp. Foreman 1963
Protozoa - Entactinaria - Eptingiidae

	Eptingium informal sp. A

	Eptingium sp. Dumitrica 1978

	Eptingium nakasekoi Kozur and Mostler 1994

	Cryptostephanidium informal sp. A

	Cryptostephanidium informal sp. C

	Cryptostephanidium sp. Dumitrica 1978

	Cryptostephanidium japonicum (Nakaseko and Nishimura 1979)
Protozoa - Entactinaria - Multiarcusellidae

	Tiborella informal sp. A

	Tiborella informal sp. B

	Tiborella sp. Dumitrica et al. 1980

	Tiborella aff. agria Sugiyama 1992
Polycystinea - Nassellaria - Spongosilicarmigeridae

	Spongosilicarmiger sp. Kozur 1984
Polycystinea - Nassellaria - Ruesticyrtiidae

	Triassocampe informal sp. A

	Triassocampe informal sp. B

	Triassocampe informal sp. C

	Triassocampe informal sp. F

	Triassocampe informal sp. G

	Triassocampe sp. Dumitrica et al. 1980

	Triassocampe myterocorys Sugiyama 1992

	Triassocampe coronata Bragin 1991

	Annulotriassocampe campanilis Kozur and Mostler 1994
Polycystinea - Nassellaria - Poulpidae

	Hozmadia sp. Dumitrica et al. 1980
Polycystinea - Spumellaria - Capnuchosphaeridae

	Sarla informal sp. A

	Plafkerium sp. Pessagno et al. 1979

	? Plafkerium antiquum Sugiyama 1992
see common names

Geography

Country:	Japan	State/province:	Tochigi
Coordinates:	36.4° North, 139.6° East (view map)
Paleocoordinates:	5.1° North, 137.9° East (Wright 2013)
Basis of coordinate:	based on nearby landmark
Geographic resolution:	small collection

Time

Period:	Triassic	Epoch:	Middle Triassic
Stage:	Anisian	10 m.y. bin:	Triassic 2
Key time interval:	Anisian
Age range of interval:	247 - 241.464 m.y. ago

Stratigraphy

Stratigraphic resolution:	group of beds
Stratigraphy comments: 4 samples (YZH-36 - YZH-42), Pseudostylosphaera japonica interval zone

Lithology and environment

Primary lithology:	lithified chert
Lithology description: blue gray chert
Environment:	basinal (siliceous)

Taphonomy

Modes of preservation:	body
Size of fossils:	microfossils

Collection methods and comments

Collection methods:	field collection
Reason for describing collection:	biostratigraphic analysis

Metadata

Database number:	96063
Authorizer:	W. Kiessling	Enterer:	U. Merkel
Research group:	micropaleontology
Created:	2010-05-11 05:41:34	Last modified:	2025-02-22 15:12:02
Access level:	the public	Released:	2010-05-11 05:41:34
Creative Commons license:	CC0

Reference information

Primary reference:

32604.

M. Ohtaka, Y. Aita, and T. Sakai. 1998. Middle Triassic radiolarian biostratigraphy of the bedded chert in the Minowa quarry, Kuzuu Town, Ashio Mountains. News of Osaka Micropaleontologists, Special Volume 11:95-113 [W. Kiessling/U. Merkel]