ammonites
Chertovskia Fm., Chertovskoi Suite (Group), Upper Lena River Basin, Siberia (Ordovician of Russian Federation)

Where: Siberia, Russian Federation (57.0° N, 106.0° E: paleocoordinates 11.8° N, 14.6° E)

• basin-level geographic resolution

When: Chertovskia Formation, Late/Upper Llanvirn (463.5 - 460.9 Ma)

• Chertovskia Fm., Chertovskoi Suite (Group)

• formation-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, ooidal, silty, sandy shale and limestone

• mixed argillite, limestone, and some sandstone at top with siltstone and rubbly oolitic limestone at bottom

Primary reference: A. V. Kanygin et al. 1989. Ordovician siberian Platform: Fauna and stratigraphy of the Lena Facial Zone; Novosibirski; Nauka Sib. Birch. Trudy Instituta Geologii i Geofiziki Vypusk Akademiya Nauk SSSR (in Russian) 751:1-216 [A. Miller/P. Novack-Gottshall] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 9224: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 06.10.2000