Where: Russian Federation (73.7° N, 111.0° E: paleocoordinates 75.1° N, 87.6° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Bojarkensis ammonoid zone, Early/Lower Hauterivian (136.4 - 130.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified shale

Size class: macrofossils

Collected by Bogomolov in 1984

Primary reference: Y. I. Bogomolov. 1989. Poliptikhity (Ammonity) i biostratigrafiya boreal'nogo Valanzhina. Akademiya Nauk SSSR, Sibirskoe Otdelenie Trudy Instituta Geologii I Geofiziki 696:1-199 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 189672: authorized by Matthew Clapham, entered by Matthew Clapham on 04.11.2017

Creative Commons license: CC BY (attribution)