Boyarka River-4 (Cretaceous of Russian Federation)

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

• Paleocoordinates: 67.6° N, 70.1° E (Wright 2013)

• small collection-level geographic resolution

When: Surites analogus zone, III Member, Berriasian (143.1 - 137.1 Ma)

• member-level stratigraphic resolution

Environment/lithology: marine; gray, green, argillaceous siltstone

• lithology described as clayey, greenish-grey silt with intercalations of elongate concretions of calcareous sandy siltstone

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 2469: authorized by Mark Patzkowsky, entered by Karen Layou on 05.07.1999, edited by Austin Hendy

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Foraminifera
  -
"Marginulina glabroides" = Cristellaria (Marginulina), "Marginulina zaspelovae" = Cristellaria (Marginulina), "Marginulina secta" = Cristellaria (Marginulina)
"Marginulina glabroides" = Cristellaria (Marginulina)
"Marginulina zaspelovae" = Cristellaria (Marginulina)
"Marginulina secta" = Cristellaria (Marginulina)
Nodosariata
 Vaginulinida - Vaginulinidae
Lenticulina pseudoarctica
Cephalopoda
 Ammonitida - Polyptychitidae
Subcraspedites anglicus, ex gr. Subcraspedites pressulus, aff. Subcraspedites primitivus, Surites subanalogus, Surites clementianus, Surites cf. clementianus, Surites analogus
ex gr. Subcraspedites pressulus ammonite
originally entered as "Subcraspedites ex gr. pressulus"
aff. Subcraspedites primitivus ammonite
originally entered as "Subcraspedites aff. primitivus"
Surites subanalogus ammonite
originally entered as "Surites subanalogus"
Surites clementianus ammonite
originally entered as "Surites clementianus"
Surites cf. clementianus ammonite
originally entered as "Surites cf. clementianus"
Surites analogus Bogoslowsky 1897 ammonite
originally entered as "Surites analogus"
 Belemnitida -
Pachyteuthis subrectangulata
 Belemnitida - Cylindroteuthididae
Lagonibelus superelongatus, cf. Lagonibelus sibiricus, Lagonibelus gustomesovi
cf. Lagonibelus sibiricus belemnite
originally entered as "Lagonibelus cf. sibiricus"
 Belemnitida - Belemnitidae
Cylindroteuthis baculus, Cylindroteuthis repentina
Bivalvia
 Pholadida - Pleuromyidae
Pleuromya uralensis
 Pectinida - Pectinoidae
Pectinidae indet., cf. Camptonectes lens
Pectinidae indet. Wilkes 1810 scallop
cf. Camptonectes lens Sowerby 1818 scallop
originally entered as "Camptonectes cf. lens"
 Pectinida - Buchiidae
Buchia subokensis, Buchia spasskensis, Buchia fischeriana, Buchia volgensis, Buchia trigonoides, Buchia okensis
Buchia fischeriana d'Orbigny 1845 scallop
Buchia volgensis Lahusen 1888 scallop
Buchia trigonoides Lahusen Smith 1894 scallop
Buchia okensis Pavlow 1907 scallop
 Nuculida - Nuculidae
Nucula sp.
Nucula sp. Lamarck 1799 nut clam