Baltic amber (Janson coll) (Eocene of Russian Federation)

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

• coordinate based on nearby landmark

• local area-level geographic resolution

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: mesofossils, microfossils

Preservation: amber

Collected by Mr. Janson

• Repository: not stated

Primary reference: T. D. A. Cockerell. 1910. Some insects in Baltic amber. The Entomologist 43:153-155 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 140082: authorized by Matthew Clapham, entered by Matthew Clapham on 28.02.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Hemiptera - Achilidae
Oliarus oligocenus n. sp. Cockerell 1910 achilid planthopper
 Diptera - Keroplatidae
"Macrocera abundare" = Kelneria abundare
"Macrocera abundare" = Kelneria abundare Meunier 1904 predatory fungus gnat
 Diptera - Sciaridae
Sciara electriphila n. sp. Cockerell 1910 dark-winged fungus gnat