Oy-Muran section, Bed 09 (Cambrian of Russian Federation)

Where: Yakutia, Russian Federation (61.1° N, 126.2° E: paleocoordinates 9.3° S, 12.8° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Laticephalus - Erbiella trilobite zone, Oi-Muran Reef Massif Formation, Botomian (516.0 - 512.9 Ma)

• Sometimes given as part of the Pestrotsvet formation.

• bed-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; dolomitic, gray, green, white limestone

• White and greenish-gray taphostromal platy and flaggy limestones with abundant «levels», i.e., archaeocyathan cups lying on sides and half filled with clayey material. Limestones of the lower and upper parts are dolomitic.

Size classes: macrofossils, mesofossils, microfossils

• All the fossils were chemically extracted from limestone rocks with buffered ca. 10% diluted acetic acid and represent shells in apatitic preservation.

Preservation: original calcite

Collected by Andrej Zhuravlev in 1981, 1987; reposited in the PIN

Collection methods: bulk, acetic,

• All the fossils were chemically extracted from limestone rocks with buffered ca. 10% diluted acetic acid and represent shells in apatitic preservation.

Primary reference: A. I. Varlamov, A. Y. Rozanov, V. V. Khomentovsky, YuYa Shabanov, G.P. Abaimova, YuE Demidenko, G. A. Karlova, I. V. Korovnikov, V. A. Luchinina, E. Ya Malakhovskaya, P. Yu Parkhaev, T. V. Pegel, N. A. Skorlotova, V. M. Sundukov, S. S. Sukhov, A. B. Fedorov, and L. D. Kipriyanova. 2008. The Cambrian System of the Siberian Platform. Part 1: The Aldan-Lena region 1-274 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 174246: authorized by Pete Wagner, entered by Pete Wagner on 06.11.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Epiphyton
  - Ludloviaceae
Proaulopora
  -
Artiopoda
 Agnostida - Hebediscidae
"Delgadella lenaica" = Delgadella lenaicus, "Delgadella aff. lenaica" = Delgadella lenaicus
"Delgadella lenaica" = Delgadella lenaicus Toll 1899
"Delgadella aff. lenaica" = Delgadella lenaicus Toll 1899
Trilobita
 Redlichiida - Ellipsocephalidae
Triangulaspis sp. Lermontova 1940 trilobite
 Redlichiida -
Judomia lata trilobite
 Corynexochida - Dorypygidae
Bonnia venefica trilobite
 Corynexochida - Edelsteinaspididae
 Corynexochida - Corynexochidae
 Corynexochida - Dolichometopidae
Obolellata
 Obolellida - Obolellidae
Obolella chromatica Billings 1861
Brachiopoda
  -
Oymurania gravestocki Kouchinsky et al. 2015
Stenothecoida
 Cambridioida - Cambridiidae
 Hyolithelminthida - Hyolithellidae
Hyolithellus sp. Billings 1872
Archaeocyatha
 Ajacicyathida - Tumulocoscinidae
Tumulocoscinus sp. archaeocyath sponge
 Ajacicyathida - Agyrekocyathidae
"Mennericyathus gratus" = Agyrekocyathus
"Mennericyathus gratus" = Agyrekocyathus archaeocyath sponge
 Ajacicyathida - Dokidocyathellidae
Dokidocyathella incognita archaeocyath sponge
 Ajacicyathida - Fallocyathidae
Fallocyathus dubius archaeocyath sponge
 Ajacicyathida - Ethmophyllidae
Squamosocyathus taumatus archaeocyath sponge
 Ajacicyathida - Kijacyathidae
Fansycyathus lermontovae archaeocyath sponge
 Ajacicyathida - Jakutocarinidae
Jakutocarinus jakutensis Zhuravleva 1960 archaeocyath sponge
 Ajacicyathida - Japhanicyathidae
Japhanicyathus genurosus archaeocyath sponge
 Ajacicyathida - Robertocyathidae
Robertocyathus meshkovae archaeocyath sponge
 Ajacicyathida - Bronchocyathidae
Thalamocyathus apprimus archaeocyath sponge
Taylorcyathus subtaylori archaeocyath sponge
 Ajacicyathida - Ajacicyathidae
Rotundocyathus novus archaeocyath sponge
Nochoroicyathus arteintervallum archaeocyath sponge
 Ajacicyathida - Geocyathidae
Geocyathus botomaensis archaeocyath sponge
Geocyathus latini archaeocyath sponge
Geocyathus krasnopeevae archaeocyath sponge
 Ajacicyathida - Tumulocyathidae
"Tumulocyathellus sp." = Plicocyathus, Isiticyathus ultrus
"Tumulocyathellus sp." = Plicocyathus Vologdin 1960 archaeocyath sponge
Isiticyathus ultrus archaeocyath sponge
 Capsulocyathida - Fransuasaecyathidae
Fransuasaecyathus secundus archaeocyath sponge
Fransuasaecyathus subtumulatus secundus
 Capsulocyathida - Coscinocyathidae
Coscinocyathus vsevolodi archaeocyath sponge
Coscinocyathus cf. marocanoides archaeocyath sponge
Coscinocyathus ex gr. marocanoides
 Archaeocyathida - Loculicyathidae
"Robustocyathus biohermicus" = Cambrocyathellus
"Robustocyathus biohermicus" = Cambrocyathellus archaeocyath sponge
 Monocyathida - Monocyathidae
Archaeolynthus nalivkini archaeocyath sponge
 Monocyathida - Globosocyathidae
Propriolynthus vologdini Yakovlev 1956 archaeocyath sponge
Renalcis
  - Chabakoviacea
Hormogoneae
 Oscillatoriales - Girvanellaceae
Girvanella problematica Nicholson and Etheridge 1878
 Ichnofossils -
Granularia sp. Pomel 1849