Bakay River, above Cherkassky village (Nalivkina collection) (Devonian of Kazakhstan)

Where: Kazakhstan (50.1° N, 58.2° E: paleocoordinates 6.4° N, 25.4° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Early/Lower Famennian (376.1 - 370.6 Ma)

• Cheiloceras stufe (II)

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Collected by A.K. Nalivkina

Primary reference: B. I. Bogoslovsky. 1969. Devonskie ammonoidei I. Agoniatitidy. Akademiya Nauk SSSR, Trudy Paleontologicheskogo Instituta 124:1-328 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 172155: authorized by Matthew Clapham, entered by Matthew Clapham on 27.07.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Goniatitida - Prolobitidae
Prolobites nanus Perna 1914 ammonite
 Goniatitida - Tornoceratidae
 Goniatitida - Kirsoceratidae
Protornoceras dorsatum ammonite
var. subtumida
 Goniatitida - Pseudoclymeniidae
Pseudoclymenia pseudogoniatites Sandberger 1853 ammonite
Pseudoclymenia orensis Nalivkina 1953 ammonite
 Goniatitida - Praeglyphioceratidae
 Goniatitida - Sporadoceratidae
"Sporadoceras rotundum" = Sporadoceras (Sporadoceras) rotundum Wedekind 1908 ammonite
ssp. rotundum and spiriferum
Sporadoceras biferum Phillips 1841 ammonite
ssp. biferum