Atrypoidea Community, Kalvitza Fm., Novaya Zemlya region (Silurian of Russian Federation)

Where: Russian Federation (71.0° N, 58.0° E: paleocoordinates 6.7° N, 2.0° W)

• coordinate estimated from map

• basin-level geographic resolution

When: Kalvitza Formation, Pridoli (423.0 - 419.2 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; shelly/skeletal, gray, green, argillaceous mudstone and shelly/skeletal, argillaceous wackestone

• "The local life assemblages and accumulations (slightly transported) developed on argillaceous muds deposited in shallow, quiet water environments interpreted as BA 2, as is the case elsewhere in the world with this chiefly Uralian-Cordilleran Region community." [The occurrence is of mostly single-species accumulations of Atrypoidea, with the other faunal elements interbedded and in adjacent patches.]
• "Occurs in lenticular bands and thin beds of brachiopod conquinoid limestone, bed-by-bed accumulations of mostly articulated shells within greenish-gray, shaly mudstone and argillaceous biomicrite. All layers consist of articulated shells."

Primary reference: L. V. Nekhorosheva and D. K. Patrunov. 1999. The chief Wenlockian-Lochkovian benthic communities of the Vaigach to southern Novaya Zemlya region. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 488-495 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 23640: authorized by Michael Foote, entered by Michael Foote on 18.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita indet. Walch 1771 trilobite
Ostracoda indet. Latreille 1802 ostracod
 Podocopida -
 Palaeocopida -
Signetopsis sp. ostracod
Alveolella sp. ostracod
 Platycopida - Cavellinidae
Cavellina sp. ostracod
 Leperditicopida - Leperditiidae
Schrenckia sp. Glebovskaia ostracod
 Leperditicopida -
Bingeria sp. Martinsson 1962 ostracod
Kiaeria sp. Stormer 1934 ostracod
 Atrypida - Lissatrypidae
 Atrypida -
Atrypoidea scheii Holtedahl 1914
Bryozoa indet. Ehrenberg 1831
 Cystoporida - Fistuliporidae
 Trepostomata - Trematoporidae
Eridotrypa sp. Ulrich 1893
Spathognathodus interpositus conodont
entire name in quotes
 Ozarkodinida -
Ozarkodina remschiedensis conodont
subsp. eosteinhornensis
"Pentagonocyclicus" sp. Sea lily
crinoid columnal taxon
 Tabulata -
Tabulata indet. tabulate coral
 Favositida - Favositidae
Squameofavosites sp. Chernyshev 1941 tabulate coral
 Favositida - Pachyporidae
Striatopora sp. Hall 1851 tabulate coral
  - Anthinocrinidae
"Anthinocrinus" sp. Stukalina 1961
crinoid columnal taxon