Toyora, Protogrammoceras nipponicum zone, Locality Ishimachi 18 (Jurassic to of Japan)

Where: Yamaguchi, Japan (34.3° N, 131.0° E: paleocoordinates 45.7° N, 139.2° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Nishinakayama Formation (Toyora Group), Late/Upper Pliensbachian to Late/Upper Pliensbachian (189.6 - 182.0 Ma)

• Locality belongs to the Protogrammoceras nipponicum zone.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; shale

• Lower to Middle Jurassic shallow marine (partly brackish?) clastic deposits

Size class: macrofossils

Primary reference: K. Tanabe. 1991. Early Jurrasic Macrofauna of the Oxygen-Depleted Epicontinental Marin Basin in the Toyora Area, West Japan. Saito Ho-on Kai Special Publication 3:147-161 [M. Aberhan/S. Nurnberg/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 38174: authorized by Martin Aberhan, entered by Sabine Nürnberg on 18.04.2004, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Ammonoida indet.
Gnathostomata
  -
Osteichthyes indet.
Osteichthyes indet. bony fish
Fish scale
Cephalopoda
 Ammonitida -
Ammonitina indet.
Ammonitina indet. Hyatt 1889 ammonite
Aptychi (isolated)
 Ammonitida - Hildoceratidae
Harpoceras chrysanthemum, Harpoceras inouyei, Fuciniceras nakayamense, Protogrammoceras onoi, Protogrammoceras nipponicum, Protogrammoceras sp.
Protogrammoceras sp. Spath 1913 ammonite