Lena River, Chekurovka, Tuora-Sis Mountains, section 4 bioherm (Cambrian of Russian Federation)

Also known as Reef 3761

Where: Yakutiya, Russian Federation (71.1° N, 127.4° E: paleocoordinates 23.3° S, 15.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Lapworthella bella + Mariatheca tumefacta small shelly zone, Tyuser Formation, Tommotian (525.5 - 521.0 Ma)

• upper unit 5 and unit 6, Lapworthella bella - Mariatheca tumefacta zones, upper Tommotian

• group of beds-level stratigraphic resolution

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

• archaeocyath-microbial bioherms

Size class: macrofossils

Collection methods: peel or thin section,

Primary reference: B. S. Sokolov, L. N. Repina, N. P. Lazarenko, N. P. Meshkova, V. I. Korshunov, N. I. Nikiforov, and N. A. Aksarina. 1974. Biostratigrafiya i fauna nizhnego kembriya Kharaulakha (khr. Tuora-Sis) [Lower Cambrian biostratigraphy and fauna of Kharaulakh, Tuora-Sis Ridge]. Trudy Instituta Geologii i Geofiziki, Sibirskoye Otdeleniye 235:5-299 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 80952: authorized by Wolfgang Kiessling, entered by Uta Merkel on 22.05.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Brachiopoda
 Tommotiida - Lapworthellidae
 Tommotiida - Tommotiidae
"Camenella complicata" = Camenella, "Tommotia angulosa" = Camenella, "Tommotia diadroma" = Camenella, "Tommotia admiranda" = Camenella admiranda, "Tommotia kozlowskii" = Camenella kozlowskii
"Camenella complicata" = Camenella
"Tommotia angulosa" = Camenella
"Tommotia diadroma" = Camenella
"Tommotia admiranda" = Camenella admiranda Rozanov and Missarzhevsky 1966
"Tommotia kozlowskii" = Camenella kozlowskii Rozanov and Missarzhevsky 1966
Hyolitha
 Orthothecida - Orthothecidae
 Orthothecida - Allathecidae
Doliutus sp. Rozanov et al. 1969
Allatheca degeeri Holm 1893
Majatheca tumefacta Rozanov et al. 1969
 Orthothecida - Circothecidae
Conotheca mammilata Rozanov et al. 1969
 Hyolithida - Crestjahitidae
"Tuojdachithes figuratus" = Crestjahitus figuratus
"Tuojdachithes figuratus" = Crestjahitus figuratus Rozanov et al. 1969
 Hyolithida - Sulcavitidae
Aculifera
  - Halkieriidae
"Sachites sacciformis" = Halkieria sacciformis
"Sachites sacciformis" = Halkieria sacciformis Meshkova 1969
 Hyolithelminthida - Torellellidae
Torellella lentiformis Syssoiev 1962
 Hyolithelminthida - Hyolithellidae
Batchatocyathus
  -
Archaeocyatha
 Ajacicyathida - Asterocyathidae
Retecoscinus proximus archaeocyath sponge
 Ajacicyathida - Ajacicyathidae
Nochoroicyathus mirabilis archaeocyath sponge
Nochoroicyathus grandis archaeocyath sponge
Ajacicyathus tkatchenkoi archaeocyath sponge
Ajacicyathus anabarensis archaeocyath sponge
 Capsulocyathida - Cryptoporocyathidae
Cryptoporocyathus junicanensis archaeocyath sponge
 Capsulocyathida - Coscinocyathidae
Coscinocyathus rojkovi archaeocyath sponge
 Archaeocyathida - Dictyocyathidae
Dictyocyathus translucidus archaeocyath sponge
 Archaeocyathida - Loculicyathidae
Paranacyathus tuberculatus, "Cambrocyathellus tschuranicus" = Cambrocyathellus, "Robustocyathus robustus" = Cambrocyathellus robustus, "Robustocyathus tetracyclicus" = Cambrocyathellus, "Robustocyathus apertus" = Cambrocyathellus, Okulitchicyathus discoformis
Paranacyathus tuberculatus archaeocyath sponge
"Cambrocyathellus tschuranicus" = Cambrocyathellus archaeocyath sponge
"Robustocyathus robustus" = Cambrocyathellus robustus Vologdin 1937 archaeocyath sponge
"Robustocyathus tetracyclicus" = Cambrocyathellus archaeocyath sponge
"Robustocyathus apertus" = Cambrocyathellus archaeocyath sponge
Okulitchicyathus discoformis archaeocyath sponge
 Archaeocyathida -
Sphinctocyathus oimuranicus archaeocyath sponge
 Monocyathida - Monocyathidae
"Monocyathus polaris" = Archaeolynthus
"Monocyathus polaris" = Archaeolynthus archaeocyath sponge
Coeloscleritophora
 Chancelloriida - Sachitidae
Mobergella
  - Mobergellidae