Vikhoreva River, Bratsk (Ordovician of Russian Federation)

Where: Irkutsk, Russian Federation (56.3° N, 101.6° E: paleocoordinates 10.9° N, 17.1° E)

• coordinate stated in text

• hand sample-level geographic resolution

When: Pygodus serra conodont zone, Lower Member (Mamyry Formation), Llanvirn (466.0 - 460.9 Ma)

• lower Mamyry Formation. Based on conodonts, likely early Llanvirn. PJW: This is now the Tareevo formation.

• group of beds-level stratigraphic resolution

Environment/lithology: red, muddy, calcareous sandstone and ooidal limestone

• "open marine"
• "red muddy calcareous sandstone" and "marly oolithic limestone"

Size class: macrofossils

Collected by Dzik

• "Specimens are housed at the Institute of Paleobiology of the Polish Academy of Sciences in Warszawa, Poland (ZPAL)"

Primary reference: J. Dzik. 2010. Brachiopod identity of alleged monoplacophoran ancestors of cephalopods. Malacologia 52(1):97-113 [P. Novack-Gottshall/P. Novack-Gottshall]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 210176: authorized by Phil Novack-Gottshall, entered by Phil Novack-Gottshall on 25.05.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

 Bellerophontida -
Bellerophontida indet. Ulrich and Scofield 1897 snail
 Euomphalina - Raphistomatidae
Raphistomatidae indet. Koken 1896 snail
 Kiringellida -
Angarella sp. Asatkin 1932