PBDB Collection

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

unclassified

	Polypodites informal sp. 1 leaf

	Polypodites informal sp. 2 leaf
Polypodiopsida - Cyatheales - Cyatheaceae

	Coniopteris informal sp. 1 leaf
Polypodiopsida - Gleicheniales - Matoniaceae

	Phlebopteris informal sp. 1 leaf
Polypodiopsida - Schizaeales - Schizaeaceae

	Acrostichopteris informal sp. 1 leaf

	Acrostichopteris informal sp. 2 leaf

	Acrostichopteris informal sp. 3 leaf
Polypodiopsida - Polypodiales - Pteridaceae

	Adiantopteris informal sp. 1 leaf

	Adiantopteris informal sp. 2 leaf
Polypodiopsida - Gleicheniaceae

	Gleichenites informal sp. 1 leaf
Polypodiopsida

	Cladophlebis informal sp. 1 leaf

	Cladophlebis informal sp. 2 leaf

	Cladophlebis informal sp. 3 leaf

	Cladophlebis informal sp. 4 leaf

	Cladophlebis informal sp. 5 leaf
Polypodiopsida - Polypodiaceae

	Onychiopsis informal sp. 1 leaf
Coniferales - Podocarpaceae

	Elatocladus informal sp. 1 leaf
Bennettitales

	Zamites informal sp. 1 leaf

	Zamites informal sp. 2 leaf

	Zamites informal sp. 3 leaf

	Zamites informal sp. 4 leaf

	Otozamites informal sp. 1 leaf

	Otozamites informal sp. 2 leaf

	Pterophyllum informal sp. 1 leaf

	Anomozamites informal sp. 1 leaf

	Ptilophyllum informal sp. 1 leaf

	Ptilophyllum informal sp. 2 leaf

	Ptilophyllum informal sp. 3 leaf

	Dictyozamites informal sp. 1 leaf

	Williamsonia informal sp. 1
Lyginopteridopsida - Lyginopteridales

	Sphenopteris informal sp. 1 leaf

	Sphenopteris informal sp. 2 leaf

	Sphenopteris informal sp. 3 leaf

	Sphenopteris informal sp. 4 leaf

	Sphenopteris informal sp. 5 leaf

	Sphenopteris informal sp. 6 leaf
Peltaspermopsida - Peltaspermales - Umkomasiaceae

	Pachypteris informal sp. 1 leaf
Equisetopsida - Araucariaceae

	Brachyphyllum informal sp. 1 leaf

	Araucarites informal sp. 1

	Araucarites informal sp. 2
Cycadopsida - Cycadales

	Taeniopteris informal sp. 1 leaf

	Taeniopteris informal sp. 2 leaf

	Nilssonia informal sp. 1 leaf

	Nilssonia informal sp. 2 leaf

	Ctenozamites informal sp. 1 leaf
Ginkgoopsida - Caytoniales - Caytoniaceae

	Sagenopteris informal sp. 1 leaf
Ginkgoopsida - Czekanowskiales

	Czekanowskia informal sp. 1 leaf
Ginkgoopsida - Ginkgoales - Ginkgoaceae

	Ginkgo informal sp. 1 leaf
Hepaticae

	Thallites informal sp. 1
unclassified

	Cycadites informal sp. 1 leaf
see common names

Geography

Country:	Japan	State/province:	Yamaguchi
Coordinates:	34.2° North, 131.3° East (view map)
Paleocoordinates:	45.6° North, 147.2° East (Wright 2013)
Basis of coordinate:	estimated from map

Time

Period:	Jurassic	Epoch:	Middle Jurassic
10 m.y. bin:	Jurassic 4-5
*Period:	Middle Jurassic
Key time interval:	Middle Jurassic
Age range of interval:	174.7 - 161.5 m.y. ago
* legacy (obsolete) database fields

Stratigraphy

Formation:

Utano

Lithology and environment

Taphonomy

Size of fossils:

macrofossils

Collection methods and comments

Reason for describing collection:	biostratigraphic analysis
Taxonomic list comments:Genus-level assignments and numbers of species are from the PGAP database. Species names are in the process of being entered.

Metadata

Also known as:	PGAP 336
Database number:	30208
Authorizer:	A. Rees	Enterer:	A. Rees
Research group:	paleobotany
Created:	2003-04-02 12:40:52	Last modified:	2025-02-22 15:12:02
Access level:	the public	Released:	2003-04-02 12:40:52
Creative Commons license:	CC0

Reference information

Primary reference:

8243.

PGAP 50

T. Kimura. 1987. Recent knowledge of Jurassic and Early Cretaceous Floras in Japan and Phytogeography of this Time in East Asia. Bulletin of Tokyo Gakugei University Section IV 39:87-115 [A. Rees/A. Rees]