Lena River, Tuora-Sis Mountains, section 1 bioherm (Cambrian of Russian Federation)

Also known as Reef 1833

Where: Yakutiya, Russian Federation (71.6° N, 127.4° E: paleocoordinates 23.8° S, 15.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

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

• unit 18, 13 m thick, Mariatheca tumefacta zone, uppermost 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 80950: authorized by Wolfgang Kiessling, entered by Uta Merkel on 22.05.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
 Hyolithelminthida - Hyolithellidae
Hyolithellus vladimirovae
Hyolithellus vladimirovae Rozanov and Missarzhevsky 1966
Trilobita
  -
Trilobita indet.
Trilobita indet. Walch 1771 trilobite
Brachiopoda
 Tommotiida - Tommotiidae
Tommotiidae indet.
Tommotiidae indet. Missarzhevsky 1970
Hyolitha
 Hyolithida - Sulcavitidae
Tuojdachithes sp., Burithes sp., Burithes triangularis
Tuojdachithes sp. Rozanov et al. 1969
Burithes sp. Rozanov et al. 1969
 Orthothecida - Orthothecidae
Trapezotheca bicostata
Trapezotheca bicostata Rozanov et al. 1969
 Orthothecida - Allathecidae
Doliutus sp., Majatheca tumefacta
Doliutus sp. Rozanov et al. 1969
Majatheca tumefacta Rozanov et al. 1969
Archaeocyatha
 Capsulocyathida - Cryptoporocyathidae
Cryptoporocyathus melnikovi, Cryptoporocyathus junicanensis
Cryptoporocyathus melnikovi archaeocyath sponge
Cryptoporocyathus junicanensis archaeocyath sponge
 Capsulocyathida - Coscinocyathidae
Coscinocyathus rojkovi
Coscinocyathus rojkovi archaeocyath sponge
 Ajacicyathida -
Nevadacyathus sp.
Nevadacyathus sp. Okulitch 1943 archaeocyath sponge
 Ajacicyathida - Bronchocyathidae
Taylorcyathus eximius
Taylorcyathus eximius archaeocyath sponge
 Ajacicyathida - Ajacicyathidae
Ajacicyathus subturbidus, Ajacicyathus centesimus, Ajacicyathus tkatchenkoi, Nochoroicyathus grandis
Ajacicyathus subturbidus archaeocyath sponge
Ajacicyathus centesimus archaeocyath sponge
Ajacicyathus tkatchenkoi archaeocyath sponge
Nochoroicyathus grandis archaeocyath sponge
 Ajacicyathida - Asterocyathidae
Retecoscinus proximus
Retecoscinus proximus archaeocyath sponge
 Archaeocyathida - Loculicyathidae
"Robustocyathus orbus" = Cambrocyathellus, "Robustocyathus apertus" = Cambrocyathellus, "Robustocyathus cf. novus" = Cambrocyathellus, "Robustocyathus tetracyclicus" = Cambrocyathellus
"Robustocyathus orbus" = Cambrocyathellus archaeocyath sponge
"Robustocyathus apertus" = Cambrocyathellus archaeocyath sponge
"Robustocyathus cf. novus" = Cambrocyathellus archaeocyath sponge
"Robustocyathus tetracyclicus" = Cambrocyathellus archaeocyath sponge
  -
Rhizacyathus sp.
Rhizacyathus sp. Bedford 1939 archaeocyath sponge
 Monocyathida - Monocyathidae
"Monocyathus polaris" = Archaeolynthus
"Monocyathus polaris" = Archaeolynthus archaeocyath sponge
Bicyathus
  -
Bicyathus sp.
Bicyathus sp. Vologdin 1939