Paksa Peninsula, Bojarkia mesezhnikowi zone, Yakutia, Siberia (Cretaceous of Russian Federation)

Where: Russian Federation (73.9° N, 112.9° E: paleocoordinates 76.2° N, 89.7° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Berriasian (145.0 - 139.8 Ma)

• Bojarkia mesezhnikowi zone

• group of beds-level stratigraphic resolution

Environment/lithology: deep-water; lithified siltstone

• relatively deep water environments in the central part of the Khatanga Basin
• clayey siltstone with concretions, 18.5 m thick

Size classes: macrofossils, microfossils

Primary reference: N. I. Shulgina, M. D. Burdykina, V. A. Basov and N. Arhus. 1994. Distribution of ammonites, foraminifera and dinoflagellate cysts in the Lower Cretaceous reference sections of the Khatanga Basin, and Boreal Valanginian biogeography. Cretaceous Research 15(1):1-16 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 65731: authorized by Wolfgang Kiessling, entered by Uta Merkel on 25.09.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Foraminifera
 Lituolida - Lituolidae
 Lituolida - Haplophragmoididae
Nodosariata
 Vaginulinida - Vaginulinidae
 Nodosariida - Nodosariidae
 Robertinida - Ceratobuliminidae
Foraminifera
  -
"Marginulina ex gr. robusta" = Cristellaria (Marginulina), "Marginulina pyramidalis" = Cristellaria (Marginulina), "Marginulina turgida" = Cristellaria (Marginulina)
"Marginulina ex gr. robusta" = Cristellaria (Marginulina)
"Marginulina pyramidalis" = Cristellaria (Marginulina)
"Marginulina turgida" = Cristellaria (Marginulina)
 Ammodiscoidea - Ammodiscidae
 Trochamminacea - Trochamminidae
 Lituolacea - Ammosphaeroidinidae
 Lagenina - Ichthyolariidae
Cephalopoda
 Ammonitida - Polyptychitidae
Tollia sp., "Bojarkia mesezhnikowi" = Surites (Bojarkia) mesezhnikowi
Tollia sp. Pavlow 1914 ammonite
"Bojarkia mesezhnikowi" = Surites (Bojarkia) mesezhnikowi Shulgina 1969 ammonite