Cyrtia tuvaensis Community, Dashtygoi Beds, C. Tuva (Silurian of Russian Federation)

Where: Russian Federation (51.0° N, 93.0° E: paleocoordinates 32.2° N, 13.4° E)

• coordinate estimated from map

• basin-level geographic resolution

When: Dashtygoi Beds Formation, Wenlock (433.4 - 427.4 Ma)

Environment/lithology: marine; shelly/skeletal, argillaceous, calcareous siltstone

• "Well-sorted, disarticulated, well-preserved specimens indicate insignificant transport. Dominance of nominative speices and excellent preservation suggest nearby source. Large, flat interarea of Cyrtia commonly taken as modification for soft substrate [quiet water, as indicated by articulated shells]. BA 3. Ocurrence in BA 3 contrasts with more offshore BA 5 position of British Wenlock (Wang Yu et al. 1987)."
• "At Kadvoi articulated and disarticulated specimens occur in a calcareous, argillaceous siltstone. At Chaakhol shell beds made of numerous disarticulated dorsal and ventral valves of Cyrtia form a laterally continuous coquina."

Primary reference: E. V. Vladimirskaya and N. P. Kulkov. 1999. Silurian brachiopod communities of Tuva. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 545-548 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 24778: authorized by Michael Foote, entered by Michael Foote on 20.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Spiriferida - Cyrtiidae
Cyrtia tuvaensis
 Spiriferida - Adolfiidae
Pinguispirifer kadensis
 Atrypida - Anazygidae
Tuvaella rackovskii
 Atrypida - Atrypidae
Atrypa reticularis
Atrypa reticularis Linnaeus 1758
 Rhynchonellida - Orthorhynchulidae
Tuvaerhynchus khalfini
 Rhynchonellida - Rhynchotrematidae
"Stegorhynchella angaciensis" = Stegerhynchus
"Stegorhynchella angaciensis" = Stegerhynchus
Strophomenata
 Strophomenida - Amphistrophiidae
Mclearnites prosperus
 Strophomenida - Strophonellidae
"Strophonella euglypha" = Strophoprion euglypha
"Strophonella euglypha" = Strophoprion euglypha Dalman 1828