PBDB Collection

Unuma: Bajocian, Japan

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Polycystinea - Spumellaria - Hagiastridae

	Tetraditryma sp. Baumgartner 1980

	Crucella theokaftensis Baumgartner 1980
Polycystinea - Spumellaria - Emiluviidae

	Emiluvia sp. Foreman 1973
Polycystinea - Spumellaria - Pantanelliidae

	Trillus informal sp. A

	Trillus sp. Pessagno and Blome 1980

	Pachyonchus informal sp. A

	Zartus dickinsoni

	Zartus informal sp. A

	Pantanellium informal sp. A

	Gorgansium informal sp. A

	Gorgansium silviesense Pessagno and Blome 1980

	Xiphosphaera informal sp. A
Polycystinea - Spumellaria - Angulobracchiidae

	Paronaella sp. Pessagno 1971
Polycystinea - Spumellaria - Archaeospongoprunidae

	Archaeospongoprunum sp. Pessagno 1973
Polycystinea - Spumellaria - Tritrabidae

	Tritrabs cf. ewingi (Pessagno 1977)

	Tritrabs cf. hayi (Pessagno 1977)
Polycystinea - Nassellaria - Amphipyndacidae

	Andromeda sp.
Polycystinea - Nassellaria - Parvicingulidae

	Mirifusus sp. Pessagno 1977

	Mirifusus cf. guadalupensis Pessagno 1977

	? Parvicingula informal sp. A
Polycystinea - Nassellaria - Eucyrtidiidae

	Cyrtocapsa mastoidea Yao 1979

	Stichocapsa tegiminis

	? Stichocapsa informal sp. A
Polycystinea - Nassellaria - Eucyrtidiellidae

	? Eucyrtidium unumaensis Yao 1979
Polycystinea - Nassellaria - Ultranaporidae

	Napora informal sp. A
Polycystinea - Nassellaria - Unumidae

	Unuma echinatus Ichikawa and Yao 1976

	Unuma typicus Ichikawa and Yao 1976
Polycystinea - Nassellaria - Archaeodictyomitridae

	Archaeodictyomitra sp. Pessagno 1977
Polycystinea - Nassellaria - Hsuidae

	Hsuum sp. Pessagno 1977

	? Hsuum informal sp. A
Polycystinea - Nassellaria - Poulpidae

	Saitoum informal sp. A

	Saitoum informal sp. B

	Saitoum sp. Pessagno 1977
Polycystinea - Nassellaria - Williriedellidae

	Tricolocapsa cf. ruesti Tan Sin Hok 1927

	Tricolocapsa plicarum Yao 1979
Protozoa - Entactinaria - Eptingiidae

	Perispyridium sp. Dumitrica 1978

	Perispyridium ordinarium (Pessagno 1977)
see common names

Geography

Country:	Japan	State/province:	Gifu
Coordinates:	35.4° North, 137.0° East (view map)
Paleocoordinates:	47.6° North, 153.6° East (Wright 2013)
Basis of coordinate:	stated in text
Geographic resolution:	small collection

Time

Period:	Jurassic	Epoch:	Middle Jurassic
Stage:	Bajocian	10 m.y. bin:	Jurassic 4
Key time interval:	Bajocian
Age range of interval:	170.9 - 168.2 m.y. ago

Stratigraphy

Stratigraphic resolution:	group of beds
Stratigraphy comments: 5 samples (SMU01, SMU04, 379, 380, SMU10)

Lithology and environment

Primary lithology:	lithified cherty/siliceous "shale"
Lithology description: siliceous shale with some manganese carbonate nodules
Environment:	basinal (siliceous)

Taphonomy

Modes of preservation:	body
Size of fossils:	microfossils
Preservation of anatomical detail:	good

Collection methods and comments

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

Metadata

Database number:	96066
Authorizer:	W. Kiessling	Enterer:	U. Merkel
Modifier:	U. Merkel	Research group:	micropaleontology
Created:	2010-05-12 00:29:25	Last modified:	2025-02-22 15:12:02
Access level:	the public	Released:	2010-05-12 00:29:25
Creative Commons license:	CC0

Reference information

Primary reference:

32605.

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]