Where: Russian Federation (43.3° N, 132.2° E: paleocoordinates 39.2° N, 111.8° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Zhitkov Formation, Spathian (251.3 - 247.2 Ma)

• Upper Spathian. 1 cm above the 30-cm thick white vitric tuff marker bed.

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified mudstone

Size class: macrofossils

Collected in 2011-2012

• Repository: National Museum of Nature and Science, Tsukuba

Primary reference: Y. Shigeta and T. Kumagae. 2016. Spathian (late Olenekian, Early Triassic) ammonoids from the Artyom area, South Primorye, Russian far east and implications for the timing of the recovery of the oceanic environment. Paleontological Research 20:48-60 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 175858: authorized by Matthew Clapham, entered by Matthew Clapham on 15.01.2016

Creative Commons license: CC BY (attribution)