Inuyama Mp-NCU63 (Triassic of Japan)

Where: Japan (35.4° N, 137.0° E: paleocoordinates 44.5° N, 126.3° E)

• coordinate estimated from map

When: Metapolygnathus praecommunisti conodont zone, Tuvalian (232.0 - 221.5 Ma)

• studied sections are in the Kamiaso unit, which consists of thrust sheets of sedimentary sequences containing Triassic to Lower Jurassic bedded cherts and overying Middle Jurassic clastic rocks (sandstones, mudstone); studied thin sections (N and O) are located in the CH-2 thrust sheet

Environment/lithology: basinal (siliceous); chert

• absence of carbonate rocks suggests that the primary depositional site was deeper than CCD, and beyond the reach of terrigenous clastic material

Size class: microfossils

Primary reference: Y. Tomimatsu, T. Nozaki, H. Sato, Y. Takaya, J.I. Kimura, Q. Chang, H. Naraoka, M. Rigo, and T. Onoue. 2021. Marine osmium isotope record during the Carnian “pluvial episode” (Late Triassic) in the pelagic Panthalassa Ocean. Global and Planetary Change 197 [B. Seuss/B. Seuss]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 218080: authorized by Barbara Seuss, entered by Barbara Seuss on 18.02.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Conodonta
 Ozarkodinida - Gondolellidae
Hayashiella nodosa, Metapolygnathus praecommunisti
Hayashiella nodosa Hayashi 1968 conodont