Boyarka River-3 (Cretaceous of Russian Federation)

Where: Siberia, Russian Federation (70.8° N, 97.6° E: paleocoordinates 71.2° N, 81.5° E)

• small collection-level geographic resolution

When: Hectoroceras kochi zone, II Member, Berriasian (145.0 - 139.8 Ma)

• member-level stratigraphic resolution

Environment/lithology: marine; gray, green, yellow, silty claystone

• lithology is generally a greenish-grey clayey silt, yellow brown in some places; intercalations of grey-yellow plastic clay present; horizons and individual concretions of calcareous siltstone traced throughout the member

Size class: macrofossils

Primary reference: V. N. Saks, ed. 1975. The Jurassic-Cretaceous Boundary and the Berriasian Stage in the Boreal Realm. 1-319 [M. Patzkowsky/K. Layou/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 2468: authorized by Mark Patzkowsky, entered by Karen Layou on 05.07.1999, edited by Austin Hendy

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Nodosariata
 Vaginulinida - Vaginulinidae
aff. Lenticulina sossipatrovae, Lenticulina gudinae
aff. Lenticulina sossipatrovae
originally entered as "Lenticulina aff. sossipatrovae"
 Nodosariida - Nodosariidae
Astacolus trigonius
Lingulata
 Lingulida - Lingulidae
Lingula sp.
Lingula sp. Bruguiére 1797
Cephalopoda
 Ammonitida - Polyptychitidae
Surites cf. clementianus, Hectoroceras kochi, Subcraspedites anglicus, Subcraspedites pressulus, Subcraspedites subpressulus, aff. Subcraspedites subpressulus, Subcraspedites rossicus
Surites cf. clementianus ammonite
originally entered as "Surites cf. clementianus"
Hectoroceras kochi Spath 1947 ammonite
aff. Subcraspedites subpressulus ammonite
originally entered as "Subcraspedites aff. subpressulus"
 Phylloceratida - Phylloceratidae
Phylloceras sp.
Phylloceras sp. Suess 1865 ammonite
 Belemnitida -
Lagonibelus elongatus, Lagonibelus sibiricus
 Belemnitida - Belemnitidae
Belemnites indet., Cylindroteuthis baculus, Cylindroteuthis repentina
Bivalvia
 Nuculida - Nuculidae
Nucula sp.
Nucula sp. Lamarck 1799 nut clam
 Lucinida - Lucinidae
? Lucina sp.
? Lucina sp. Bruguière 1797 clam
originally entered as "Lucina? sp."
 Carditida - Astartidae
Astarte sp., Prorokia sp.
Astarte sp. Sowerby 1816 clam
Prorokia sp. Böhm 1883 clam
 Pectinida - Buchiidae
Buchia andersoni, Buchia lahuseni, Buchia unschensis, Buchia fischeriana, Buchia terebratuloides, Buchia uncitoides, Buchia okensis, Buchia volgensis
Buchia fischeriana d'Orbigny 1845 scallop
Buchia terebratuloides Lahusen 1888 scallop
Buchia uncitoides Pavlow 1907 scallop
Buchia okensis Pavlow 1907 scallop
Buchia volgensis Lahusen 1888 scallop
 Pectinida - Oxytomidae
Oxytoma sp.
Oxytoma sp. Meek and Hayden 1865 scallop
 Myalinida - Inoceramidae
Inoceramus sp.
Inoceramus sp. Sowerby 1814 clam