Irey-Khem River, Sayan (Cambrian of Russian Federation)

Also known as Reef 3793

Where: Tuva, Russian Federation (52.9° N, 95.3° E: paleocoordinates 6.2° S, 5.6° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Upper Member (Khamsarin Formation), Toyonian (512.9 - 510.2 Ma)

• Obruchev stage

• group of beds-level stratigraphic resolution

Environment/lithology: perireef or subreef; lithified limestone

• limestone lenses in tuffaceous sandstones and conglomerates

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 81490: authorized by Wolfgang Kiessling, entered by Uta Merkel on 26.06.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Archaeocyatha
 Archaeocyathida - Archaeocyathidae
"Retecyathus kuzmini" = Archaeocyathus
"Retecyathus kuzmini" = Archaeocyathus archaeocyath sponge
 Ajacicyathida - Erbocyathidae
Erbocyathus heterovallum archaeocyath sponge
 Ajacicyathida - Sajanocyathidae
Irinaecyathus ratus archaeocyath sponge
Irinaecyathus sp. archaeocyath sponge
Irinaecyathus cf. ratus archaeocyath sponge