Izvoz Quarry, Volkhov area (Ordovician of Russian Federation)

Where: Russian Federation (60.0° N, 32.3° E: paleocoordinates 37.7° S, 1.0° E)

• coordinate estimated from map

• hand sample-level geographic resolution

When: Volkhov (471.1 - 469.2 Ma)

• In this quarry, a clay limestone spans the upper part of the Volkhov regional stage and the lower part of the Kunda regional stage, both Upper Arenig

• group of beds-level stratigraphic resolution

Environment/lithology: lagoonal or restricted shallow subtidal; lithified lime mudstone

Size class: macrofossils

Primary reference: D. B. Blake and S. Rozhnov. 2007. Aspects of life mode among Ordovician asteroids: Implications of new specimens from Baltica. Acta Palaeontologica Polonica 52(3):519-533 [L. Villier/L. Villier]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 91166: authorized by Loic Villier, entered by Loic Villier on 08.09.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Asteroidea
 Euaxosida - Cnemidactinidae
Cnemidactis sp. Spencer 1918 sea star
 Hadrosida - Urasterellidae
? Urasterella sp. McCoy 1851 sea star
 Rhombifera - Echinoencrinitidae
Echinoencrinites sp. von Meyer 1826
Eocrinoidea
  - Rhipidocystidae
Rhipidocystis sp. Jaekel 1901
  -
Paracryptocrinites sp. Rozhnov and Federov 2001