Orsberg (Oligocene of Germany)

Where: Germany (50.6° N, 7.2° E: paleocoordinates 50.4° N, 4.3° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Rott Formation, MP 30 (28.4 - 23.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified shale

• According to the reconstruction of the sedimentation history. the limnic sediments of the Rott Fonnation were deposited in a single, relatively small and shallow lake (Mors, 1995). This lake was at least 3 km in diameter, and was encircled by a large accretion zone, which passed into an alluvial forest. Many small rivulets are expected to have flown into the Rott Lake, but no large river could be evidenced (MOn, 1995). The estimated mean aunual temperature (MAT) in this area at the accumulation time of lake sediments was17.5±1.2°C, based on the leaf margin analysis (Winterscheid, 2006).
• "fine layered brown coal" also called "lignites": figure of specimen indicates complete lithification

Size classes: macrofossils, mesofossils

Preservation: adpression

Primary reference: E. F. Germar. 1849. Ueber einige Insekten aus Tertiärbildungen. Zeitschrift der Deutschen Geologischen Gesellschaft 1:52-66 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 144974: authorized by Matthew Clapham, entered by Jered Karr on 24.05.2013, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Insecta
 Diptera -
Anthracida xylotoma n. sp.
Anthracida xylotoma n. sp. Germar 1849 fly
 Coleoptera - Trogossitidae
Trogosita emortua n. sp.
Trogosita emortua n. sp. Germar 1849 bark gnawing beetle
 Coleoptera - Ochodaeidae
"Geotrupes proaevus n. sp." = Mioochodaeus proaevus
"Geotrupes proaevus n. sp." = Mioochodaeus proaevus Germar 1849 sand-loving scarab beetle
 Hymenoptera - Megachilidae
Apiaria dubia n. sp.
Apiaria dubia n. sp. Germar 1849 mason bee