Where: Kaliningrad, Russian Federation (54.9° N, 19.9° E: paleocoordinates 53.9° N, 15.2° E)

When: Priabonian (38.0 - 33.9 Ma)

• According to Aleksandrova and Zaporozhets (2008), the higher parts of the Prussian Formation (including the Blaue Erde or Blue Earth) belong to the Charlesdowniea clathrata angulosa dinocyst Zone. Based on its index species, this zone is concurrent to Zone W13 established in the Parisian basin (Châteauneuf and Gruas-Cavagnetto 1978), where it is correlated with nannoplankton zones NP18–NP21 (Powell, 1992) of the Priabonian. In the Paleogene zonation of northwestern Europe, the first occurrence of Thalassiphora fenestrata is designated at the base of the dinocyst Subzone D12b (36.20 +/- 0.1 Ma), which is correlated with zones NP18 (terminal part)–NP20 of the Priabonian (Luterbacher et al., 2004).

Environment/lithology: terrestrial; amber

Size classes: macrofossils, mesofossils, microfossils

Preservation: original chitin, amber

Collection methods: surface (float)

• Specimens purchased by A.C. Baker, not long before 1922

Primary reference: A. C. Baker. 1922. Two new aphids from Baltic amber. Journal of the Washington Academy of Sciences 12:353-358 [C. Labandeira/A. Spencer-Lee/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 124843: authorized by Matthew Clapham, entered by Matthew Clapham on 25.02.2012

Creative Commons license: CC BY (attribution)