Dayia bohemica-Anisotrypa callosa Comm., Tomashov Formation, SW Byelorussia (Silurian of Belarus)

Where: Belarus (52.0° N, 24.0° E: paleocoordinates 17.0° S, 3.8° E)

• coordinate estimated from map

• local area-level geographic resolution

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

• upper part of Tomashov Formation

• formation-level stratigraphic resolution

Environment/lithology: marine; gray, green claystone and gray, green, argillaceous marl

• "...BA 3...There were deep water, normal marine conditions at base of Tomashov formation..Abundant shallow water benthos at the end Tomashov time (top of the formation) indicates shallowing, but not lagoonal conditions."
• "dark greenish-gray argillite and argillaceous marl"

Collection methods: core

• Abundances given for dominant brachiopods and bryozoans.

Primary reference: V. I. Pushkin and T. L. Modzalevskaya. 1999. Silurian and Lower Devonian brachiopod and bryozoan communities of southwestern Byelorussia. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 496-509 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 23650: authorized by Michael Foote, entered by Michael Foote on 18.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
Bivalvia
  -
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
Cephalopoda
  -
Cephalopoda indet. Cuvier 1797
 Lophophorata -
Tentaculitida indet. Ljaschenko 1955
Strophomenata
 Strophomenida -
 Strophomenida - Strophochonetidae
 Strophomenida - Shaleriidae
"Shaleriella tenuis" = Shaleria (Shaleriella)
"Shaleriella tenuis" = Shaleria (Shaleriella)
 Strophomenida - Rafinesquinidae
Leptaena sp. Dalman 1828
Rhynchonellata
 Orthida - Dalmanellidae
Isorthis ovalis, "Isorthis ex gr. canaliculata" = Levenea canaliculata
"Isorthis ex gr. canaliculata" = Levenea canaliculata Lindström 1861
 Athyridida - Rhynchospirinidae
Homoeospira sp. Hall and Clarke 1893
 Athyridida - Dayiidae
 Rhynchonellida - Hebetoechiidae
Lingulata
 Lingulida - Discinidae
Schizotreta sp. Kutorga 1848
Stenolaemata
 Cystoporata - Fistuliporidae
 Cryptostomata - Ptilodictyidae
 Trepostomida - Stenoporidae
 Trepostomata - Heterotrypidae
"Lioclema sp." = Leioclema Ulrich 1882
Trilobita
 Phacopida - Acastidae
Acaste dayiana trilobite
 Phacopida - Calymenidae