Well 111 near Izvara (Ordovician of Russian Federation)

Where: Leningrad oblast, Russian Federation (59.3° N, 29.4° E: paleocoordinates 28.8° S, 1.4° E)

• coordinate stated in text

• basin-level geographic resolution

When: Izvar Formation, Rakvere (451.8 - 450.5 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; dolomite

• Below are fine- and microcrystalline dolomites, light gray and almost white, strongly microcracked, strong, with frequent bluish-black pyritization patterns.

Size classes: macrofossils, mesofossils, microfossils

Primary reference: N.U. Karpuzova and M.N. Tokareva. 2014. Legend of the Central European series of sheets of the State Geological Map of the Russian Federation, scale 1:1,000,000 (third generation). [S. Peters/E. Mazko]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 235825: authorized by Shanan Peters, entered by Evgeny Mazko on 07.08.2024

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Orthida - Platystrophiidae
"Platystrophia cf. lynx" = Neoplatystrophia lynx
"Platystrophia cf. lynx" = Neoplatystrophia lynx Eichwald 1830
Strophomenata
 Strophomenida - Rafinesquinidae
"Rafinesquina inaequiclina" = Rakverina inaequiclina
"Rafinesquina inaequiclina" = Rakverina inaequiclina Alichova 1951
 Strophomenida - Sowerbyellidae
Ostracoda
 Leperditicopida - Leperditiidae
 Palaeocopida - Tetradellidae
"Tallinnopsis variabilis" = Ahla
"Tallinnopsis variabilis" = Ahla ostracod
 Palaeocopida - Bolbinidae
 Palaeocopida - Piretellidae
 Palaeocopida - Sigmoopsidae
Trilobita
 Phacopida - Pterygometopidae