Lynna River valley, A. raniceps zone, Obukhovo Fm. (Ordovician of Russian Federation)

Where: St. Petersburg, Russian Federation (60.0° N, 32.6° E: paleocoordinates 35.6° S, 1.9° E)

• coordinate estimated from map

When: Asaphus raniceps trilobite zone, Obukhovo Formation, Kunda (468.1 - 463.5 Ma)

Environment/lithology: marine; glauconitic, ooidal, gray, argillaceous limestone

• "The Obukhovo Formation, of which only the lower 20 cm has been sampled, limestone with some glauconite and iron ooliths.", in Rasmussen & Harper (2008)

Size classes: macrofossils, mesofossils

Primary reference: C. M. O. Rasmussen and D. A. T. Harper. 2008. Resolving early Mid-Ordovician (Kundan) bioevents in the East Baltic based on brachiopods. Geobios 41:533-542 [B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 191362: authorized by Björn Kröger, entered by Björn Kröger on 23.01.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Billingsellida - Gonambonitidae
Gonambonites sp. Pander 1830
 Billingsellida - Clitambonitidae
 Strophomenida - Plectambonitidae
Ingria sp. Öpik 1930
 Strophomenida - Taffiidae
Ahtiella sp. Öpik 1932
Rhynchonellata
 Pentamerida -
Syntrophiidina indet. Ulrich and Cooper 1936
 Orthida - Paurorthidae
Paurorthis parva Pander 1830
 Orthida - Orthidae
 Orthida - Lycophoriidae
Lycophoria sp. Lahusen 1885