Lynna River valley, A. expansus zone (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 expansus trilobite zone, Lynna Formation, Kunda (468.1 - 463.5 Ma)

Environment/lithology: marine; nodular, muddy limestone and wackestone

• "This consists of a turbidite-like nodular limestone with thick clay intercalations, lacking glauconite and iron ooliths. The limestones are dominated by mudstones and wackestones. The total thickness of this formation is 2.8 m.", 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 191360: authorized by Björn Kröger, entered by Björn Kröger on 23.01.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Billingsellida - Polytoechiidae
 Billingsellida - Gonambonitidae
Gonambonites sp. Pander 1830
 Billingsellida - Clitambonitidae
 Strophomenida - Plectambonitidae
Ingria sp. Öpik 1930
 Strophomenida - Taffiidae
Inversella sp. Opik 1933
Rhynchonellata
 Pentamerida -
Syntrophiidina indet. Ulrich and Cooper 1936
 Orthida - Paurorthidae
Paurorthis parva Pander 1830
 Orthida - Orthidae
Orthis callactis Dalman 1827
 Orthida - Lycophoriidae
Lycophoria sp. Lahusen 1885
 Orthida - Productorthidae
Glossorthis sp. Öpik 1930
Lingulata
 Lingulida - Pseudolingulidae
Pseudolingula sp. Mickwitz 1909