Otvorot River, Sette Daban Mountains, unit 4 (Ordovician of Russian Federation)

Also known as Reef 2501

Where: Yakutiya, Russian Federation (60.2° N, 137.1° E: paleocoordinates 18.6° N, 5.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Baraniy Formation, Ashgill (449.5 - 443.7 Ma)

• 12 m thick, Baraniy Suite

• bed-level stratigraphic resolution

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

• small coral-stromatoporoid biostrome

Size class: macrofossils

Collection methods: peel or thin section,

Primary reference: K. B. Khayznikova. 1989. Biostratigrafiya i tabulyaty biogermnykh otlozheniy rannego paleozoya; Yuzhnoye Verkhoyanye [Biostratigraphy and Tabulata of lower Paleozoic bioherm deposits; southern Verkhoyansk region] [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 79437: authorized by Wolfgang Kiessling, entered by Uta Merkel on 10.03.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Demospongiae
 Chaetetida - Cryptolichenariidae
? Porkunites dubius n. sp. Khayznikova 1989 chaetetid sponge
Stromatoporoidea
 Stromatoporoidea -
Stromatoporoidea indet. stromatoporoid sponge
Anthozoa
 Lichenariida - Lyoporidae
Nyctopora gungaensis tabulate coral
 Auloporida - Fletcheriellidae
 Auloporida - Syringoporidae
Syringopora secunda tabulate coral
 Tetradiida - Tetradiidae