Baltic Amber, Humboldt Museum Thomas collection (Eocene of Russian Federation)

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

• 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: macrofossils, mesofossils, microfossils

Preservation: amber

Collected by Thomas; reposited in the MfN

Collection methods: surface (float)

• Geological Institute, University of Berlin, colln. Thomas

Primary reference: G. Enderlein. 1911. Die fossilen copeognathan und ihre phylogenie. Palaeontographica 58:279-360 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 123993: authorized by Matthew Clapham, entered by Matthew Clapham on 05.02.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Orthoptera - Oecanthidae
Madasumma europensis n. sp.1 Chopard 1936 tree cricket
 Psocodea - Caeciliusidae
"Caecilius debilis" = Valenzuela debilis
"Caecilius debilis" = Valenzuela debilis Pictet and Hagen 1856 lizard barklouse
 Trichoptera - Polycentropodidae
"Polycentropus vetustus" = Holocentropus vetustus2
"Polycentropus vetustus" = Holocentropus vetustus2 Germar 1813 caddisfly
 Diptera - Ceratopogonidae
Dasyhelea eodicryptoscenica3 Szadziewski 1988 biting midge
MBI Thomas 245
Forcipomyia spp.3 Meigen 1818 biting midge
MBI Thomas 241
Forcipomyia (Forcipomyia) sp.3 Meigen 1818 biting midge
MBI Thomas 217, 266
Forcipomyia (Forcipomyia) uncula3 Meunier 1904 biting midge
MBI 218, 220
Forcipomyia (Forcipomyia) turbinata3 Meunier 1904 biting midge
MBI Thomas 211
Forcipomyia krzeminskii3 Szadziewski 1988 biting midge
MBI Thomas 272
Ceratopogoninae indet.3 Newman 1834 biting midge
MBI 186, 221
Culicoides sp.3 Latreille 1809 biting midge
MBI 222, Thomas 452
Ceratopogonini indet.3 Newman 1834 biting midge
MBI 223, Thomas 309, 318
Monohelea "sp. A"3 Kieffer 1917 biting midge
MBI Thomas 489
Ceratopogon sp.3 Meigen 1803 biting midge
Thomas 48, 275, 413
Ceratopogon tertiaricus3 Szadziewski 1988 biting midge
MBI 219
Brachypogon (Brachypogon) balticus3 Szadziewski 1988 biting midge
MBI Thomas 380
Brachypogon (Isohelea) prominulus3 Meunier 1904 biting midge
MBI Thomas 106, 461
"Monohelea clunipes" = Monogedania clunipes3 Loew 1850 biting midge
MBI 216
Arachnida
 Araneae - Anapidae
Balticonopsis thomasi n. gen. n. sp.5
Balticonopsis thomasi n. gen. n. sp.5 Wunderlich 2004 spider
no. 17
 Araneae - Oecobiidae
Mizalia sp.4 Koch and Berendt 1854 disc web spider
MB.A.110
 Araneae - Insecutoridae
? Insecutor sp.6 Petrunkevitch 1942 spider
MBI Thomas 29