Khalyya River, Sette Daban Mountains, unit 7 (Silurian of Russian Federation)

Also known as Reef 2522

Where: Yakutiya, Russian Federation (62.2° N, 138.2° E: paleocoordinates 25.6° N, 16.0° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Khandyg Formation, Wenlock (433.4 - 427.4 Ma)

• 39 m thick, upper Tayakh Suite

• bed-level stratigraphic resolution

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

• 3 coral-stromatoporoid biostromes, 7, 12 and 10 m thick

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 79400: authorized by Wolfgang Kiessling, entered by Uta Merkel on 07.03.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Megalodontida - Megalodontidae
"Megalomus sp." = Megalomoidea
"Megalomus sp." = Megalomoidea clam
Anthozoa
 Stauriida - Lykophyllidae
Pseudophaulactis sp. Zaprudskaya 1963 horn coral
 Favositida - Favositidae
Favosites ex gr. forbesi tabulate coral
Favosites ex gr. gothlandicus Lamarck 1816 tabulate coral
 Favositida - Multisoleniidae
Mesosolenia festiva tabulate coral
 Auloporida - Syringoporidae
Syringopora sp. Goldfuss 1826 tabulate coral
Stromatoporoidea
 Labechiida - Platiferostromatidae
Cystocerium sincerum stromatoporoid sponge
 Clathrodictyida - Actinodictyidae
Ecclimadictyon nikiforovae stromatoporoid sponge
 Syringostromatida - Syringostromatidae
Columnostroma frutilosum stromatoporoid sponge