Upper Arenigian, Volkhov River, Leningrad, Russia (Ordovician of Russian Federation)

Where: Russian Federation (60.0° N, 30.0° E: paleocoordinates 39.0° S, 1.2° W)

• coordinate estimated from map

• basin-level geographic resolution

When: Arenigian (478.6 - 468.1 Ma)

• no formation reported; most likely age is Lower Kundasian (Asaphus expansus zone); Upper Volkhovian age cannot be excluded

Environment/lithology: lithified, shelly/skeletal, argillaceous limestone

• lenticular bed of clayey limestone packed with various faunal fossils, among which echinoderms predominate

Size class: macrofossils

Preservation: original calcite

Primary reference: S. V. Rozhnov. 1991. A new Lower Ordovician eocrinoid order. Paleontological Journal 25(2):41-54 [S. Holland/S. Holland/S. Holland]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 37830: authorized by Steven Holland, entered by Steven Holland on 25.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Asaphida - Asaphidae
Asaphus expansus Wahlenberg 1821 trilobite