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

Rhynchonellata
 Atrypida - Septatrypidae
 Atrypida -
Atrypoidea scheii Holtedahl 1914
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Stenolaemata
 Cystoporata - Fistuliporidae
 Trepostomata - Aisenvergiidae
Eridotrypa sp. Ulrich 1893
Deuteropoda
  -
Ostracoda indet. Latreille 1802 ostracod
Ostracoda
 Leperditicopida - Leperditiidae
Schrenckia sp. Glebovskaia ostracod
 Leperditicopida - Isochilinidae
Kiaeria sp. Glebowskaja 1949 ostracod
 Leperditicopida -
Bingeria sp. Martinsson 1962 ostracod
 Podocopida -
 Platycopida - Cavellinidae
Cavellina sp. Coryell 1928 ostracod
 Palaeocopida -
Signetopsis sp. ostracod
Eokloedenia sp. ostracod
Trilobita
  -
Trilobita indet. Walch 1771 trilobite
Crinoidea
  -
"Pentagonocyclicus" sp. Yeltysheva and Shevchenko 1960 Sea lily
crinoid columnal taxon
Conodonta
 Ozarkodinida -
Ozarkodina remschiedensis conodont
subsp. eosteinhornensis
  -
Spathognathodus interpositus conodont
entire name in quotes
Anthozoa
 Tabulata -
Tabulata indet. tabulate coral
 Favositida - Favositidae
Squameofavosites sp. Chernyshev 1941 tabulate coral
 Favositida - Pachyporidae
Striatopora sp. Hall 1851 tabulate coral
Anthinocrinus
  - Anthinocrinidae
"Anthinocrinus" sp. Stukalina 1961
crinoid columnal taxon