Chunya River. Bed 04. (Ordovician to of Russian Federation)

Also known as Река Чуня

Where: Russian Federation (62.2° N, 102.1° E: paleocoordinates 10.2° N, 13.1° E)

• coordinate based on nearby landmark

When: Mangazea Formation, Kukruse to Kukruse (458.0 - 453.0 Ma)

• Chertovskian

• group of beds-level stratigraphic resolution

Environment/lithology: open shallow subtidal; gray, green limestone and green, red siltstone

• 4. Limestones are greenish-gray, organogenic, with green interlayers siltstones, with accumulations of ostracods - Euprimitia helenae and Costoprimites textilis, abundant Rostricellula transversa and R. raymondi papa, single Mimella panna (sample 652626); higher, in the range of 0.9-1.35 m, in interlayered red, green siltstones and mudstones - abundant

Size classes: macrofossils, mesofossils

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: biostratigraphic analysis

PaleoDB collection 232749: authorized by Pete Wagner, entered by Pete Wagner on 26.12.2023

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Ostracoda
 Palaeocopida - Euprimitiidae
Euprimitia helenae
 Limbatulocopida - Dolborellidae
Costoprimites textilis
Rhynchonellata
 Orthida - Plectorthidae
"Mimella panna" = Doleroides panna
"Mimella panna" = Doleroides panna Andreeva 1955
 Rhynchonellida - Trigonirhynchiidae
Rostricellula transversa, "Rostricellula nana" = Rostricellula raymondi nana
"Rostricellula nana" = Rostricellula raymondi nana Rozman 1964
Rostricellula raymondi nаnа
Bivalvia
 Solemyida - Ctenodontidae
Sibiroctenia tchunensis, Sibiroctenia amutcanica
Sibiroctenia tchunensis Krasilova 1976 clam
Sibiroctenia amutcanica Krasilova 1976 clam
Sibiroctenia amutkanica