Tosna River, near Ulyanovka, Vassilkovo Member (Ordovician of Russian Federation)

Where: Russian Federation (59.6° N, 30.8° E: paleocoordinates 40.1° S, 1.3° W)

• coordinate estimated from map

When: Vassilkovo Member (Leetse Formation), Billingen (474.8 - 471.1 Ma)

Environment/lithology: marine; argillaceous limestone and glauconitic sandstone

• Clay

Size classes: macrofossils, mesofossils

Primary reference: L. E. Popov, E. V. A. Egerquist, and M. A. Zuykov. 2005. Ordovician (Arenig-Caradoc) syntrophiidine brachiopods from the east Baltic region. Palaeontology 48(4):739-761 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 169230: authorized by Björn Kröger, entered by Björn Kröger on 11.05.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Asaphida - Asaphidae
Proasaphus primus Balashova 1966 trilobite
 Corynexochida - Panderiidae
Ottenbyaspis sp. Bruton 1968 trilobite
 Phacopida - Cheiruridae
Rhynchonellata
 Pentamerida - Camerellidae
Idiostrophia prima Popov et al. 2005
Idiostrophia tenuicostata Popov et al. 2005
 Pentamerida - Porambonitidae
 Orthida - Paurorthidae
Paurorthis resima Rubel 1961
 Orthida - Angusticardiniidae
 Orthida - Productorthidae
Panderina tetragona Pander 1830
Strophomenata
 Strophomenida - Plectambonitidae
 Billingsellida - Polytoechiidae
Lingulata
 Acrotretida - Acrotretidae
Acrotreta subconica Kutorga 1848