Where: Kazakhstan (47.0° N, 60.5° E: paleocoordinates 47.4° N, 56.0° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Chegan Formation, Priabonian (38.0 - 33.9 Ma)
• Lower part of the Chegan Formation. Its age was originally reported as early Oligocene, but restudy of the molluscan fauna indicates that the Chegan Formation is middle?- late Eocene (Bartonian?-Priabonian Stages; Amitrov, 1994). According to Akhmet'ev (2011), the Chegan Formation belongs to the Upper Eocene Priabonian Stage except for its basal beds in Turgai.
• group of beds-level stratigraphic resolution
Environment/lithology: offshore; poorly lithified, concretionary, green claystone
Size class: macrofossils
Reposited in the PIN
Primary reference: W. B. Saunders, V. N. Shimansky, and O. V. Amitrov. 1996. Clarification of Nautilus praepompilius Shimansky from the Late Eocene of Kazakhstan. Journal of Paleontology 70(4):609-611 [A. McGowan/K. Strang/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 108262: authorized by Alistair McGowan, entered by Katie Strang on 27.04.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
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