Baksanii Fm., Kulumbe River Valley (Ordovician of Russian Federation)

Where: Siberia, Russian Federation (68.0° N, 88.0° E: paleocoordinates 2.2° N, 15.1° E)

• local area-level geographic resolution

When: Middle Member (Zagornyi Formation), Caradoc (458.4 - 449.5 Ma)

• PJW: Baksan Stage is Zagornyi (= Zagorninsk) formation in Kulumbe.

• formation-level stratigraphic resolution

Environment/lithology: offshore shelf; lithified shale and packstone

• Storm tempestites?
• interbedded shale and packstone

Size class: macrofossils

Collection methods: JA: marked by Novack-Gottshall without explanation as omitting some genera, some macrofossils, some microfossils, and species names, but apparently complete

Primary reference: B. S. Sokolov. 1982. Ordovician of the siberian Platform: Key section on the Kulumbe River. Academy of Sciences of the USSR, Siberian Branch, Transactions 506:1-239 [A. Miller/P. Novack-Gottshall]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 9298: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 12.10.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Anthozoa
 Stauriida - Stauriidae
Favistella sp. Dana 1846 horn coral
 Heliolitida - Cyrtophyllidae
Cyrtophyllum sp. Lindström 1882 tabulate coral
Conodonta
 Prioniodontida -
? Phragmodus sp. Branson and Mehl 1933 conodont
 Ozarkodinida -
Ozarkodina sp. Branson and Mehl 1933 conodont
 Panderodontida - Panderodontidae
Panderodus sp. Ethington 1959 conodont
Belodina sp. Ethington 1959 conodont
Culumbodina sp. Moskalenko 1973 conodont
  -
Scandodus sp. Lindstrom 1955 conodont
Ostracoda
 Palaeocopida -
 Palaeocopida - Aparchitidae
Ginella sp. Ivanova 1960 ostracod
 Palaeocopida - Tetradellidae
Sigmobolbina sp. Henningsmoen 1953 ostracod
 Palaeocopida - Euprimitiidae
 Palaeocopida - Bolliidae
Jonesites sp. Coryell 1930 ostracod
 Limbatulocopida - Dolborellidae
Costoprimites sp. Ivanova 1960 ostracod
Strophomenata
 Orthotetida - Triplesiidae
Triplesia sp. Hall 1859
 Strophomenida - Strophomenidae
Strophomena sp. Rafinesque and De Blainville 1824
 Strophomenida - Furcitellidae
 Strophomenida - Leptellinidae
Leptellina sp. Ulrich and Cooper 1936
Rhynchonellata
 Orthida - Glyptorthidae
Glyptorthis sp. Foerste 1914
 Orthida - Hesperorthidae
Hesperorthis sp. Schuchert and Cooper 1931
 Orthida - Plectorthidae
Mimella sp. Cooper 1930
 Rhynchonellida - Trigonirhynchiidae
Rostricellula sp. Ulrich and Cooper 1942
Stenolaemata
 Trepostomida - Monticuliporidae
Homotrypella sp. Ulrich 1886
 Trepostomida -
 Cystoporata - Constellariidae
Stellipora sp. Hall 1847
 Trepostomata - Trematoporidae
Batostoma sp. Ulrich 1882
 Cryptostomata - Rhinidictyidae
 Cryptostomata - Ptilodictyidae
"Fimbriapora sp." = Phaenopora, Insignia sp.
"Fimbriapora sp." = Phaenopora Hall 1851
Ambalodus
  -
? Ambalodus sp. Branson and Mehl 1933
Dentiferocrinus
  -
Dentiferocrinus sp. Stukalina 1968