Srednyaya Mountain, Batenevskiy Ridge, section II, unit 4 (Cambrian of Russian Federation)

Also known as Reef 3777

Where: Khakasiya, Russian Federation (54.2° N, 90.8° E: paleocoordinates 8.7° S, 7.3° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Usa Formation, Botomian (516.0 - 512.9 Ma)

• sample C-84, C-92, 90 m thick, Sanashtykgol stage

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified limestone

• massive calcimicrobial-archaeocyathan bioherm in the lower part, biostromes and interbiostromal beds in the upper part

Size class: macrofossils

Collection methods: peel or thin section,

Primary reference: D. V. Osadchaya, L. N. Kashina, I. T. Zhuravleva and N. P. Borodina. 1979. Stratigrafiya i arkheotsiaty nizhnego kembriya Altaye-Sayanskoy skladchatoy oblasti [Lower Cambrian stratigraphy and archaeocyatha of the Altay-Sayan fold belt]. Trudy Instituta Geologii i Geofiziki, Sibirskoye Otdeleniye 380:1-215 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 81330: authorized by Wolfgang Kiessling, entered by Uta Merkel on 20.06.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Archaeocyatha
 Ajacicyathida - Carinacyathidae
Carinacyathus medius archaeocyath sponge
 Ajacicyathida - Ajacicyathidae
 Capsulocyathida - Cryptoporocyathidae
Capsulocyathus irregularis archaeocyath sponge
Capsulocyathus subcallosus archaeocyath sponge
 Capsulocyathida - Coscinocyathidae
Coscinocyathus cf. latus archaeocyath sponge
 Monocyathida - Tumuliolynthidae
Tumuliolynthus tubexternus archaeocyath sponge
Tumuliolynthus sp. Zhuravleva 1963 archaeocyath sponge
 Archaeocyathida - Dictyocyathidae
Chouberticyathus sp. archaeocyath sponge
 Archaeocyathida - Loculicyathidae
Loculicyathus membranivestites archaeocyath sponge
Artiopoda
 Agnostida - Hebediscidae
"Hebediscus lermontovae" = Dipharus
"Hebediscus lermontovae" = Dipharus
Trilobita
  -
 Corynexochida - Dinesidae
Pseudoerbia sp. Repina 1964 trilobite
Erbia certa trilobite
 Corynexochida - Dolichometopidae
Poliellina sp. Poletayeva 1936 trilobite
 Redlichiida - Redlichinidae