Morkoka River, 3.2 km below the Delingde river (Ordovician to of Russian Federation)

Also known as Река Моркока, в 3,2 км ниже р. Делингде

Where: Siberia, Russian Federation (65.7° N, 112.1° E: paleocoordinates 12.4° N, 6.3° E)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Oyusut Formation, Katian to Katian (453.0 - 443.4 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; gray, green, red marl and argillaceous, calcareous siltstone

• greenish-gray or sometimes red marls and argillaceous calcareous siltstones interbedded with organogenic limestones (from Kanygin et al. 1998)

Size class: macrofossils

Primary reference: K. S. Rozman, G. A. Stukalina, I. N. Krasilov and V. A. Sytova. 1979. Фауна ордовика Средней Сибири [Ordovician fauna of middle Siberia]. Trudy Geological Institute USSR Academy of Sciences 330:1-250 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 232331: authorized by Pete Wagner, entered by Pete Wagner on 08.11.2023

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Megalodontida - Plethocardiidae
? Plethocardia aviformis n. sp.
 Modiomorphida - Modiomorphidae
Plicatomorpha plicata n. gen. n. sp.
Plicatomorpha plicata n. gen. n. sp. Krasilova 1979 clam
 Cardiidia - Grammysiidae
Cuneamya mediodepressa n. sp.