Brunstatt, horizon d1 (Oligocene of France)

Where: France (47.7° N, 7.3° E: paleocoordinates 47.1° N, 3.8° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Early/Lower Oligocene (33.9 - 28.4 Ma)

• Lutz (1997) and Mai (1995) assign the age of Brunstatt and Kleinkems to the Lower Oligocene, but Mai (1995) also allocated Brunstatt to the Mammal Reference Level MP20 which corresponds to the Priabonian (37.2–33.9 Ma) in the latest part of the Eocene. Thus, the stratigraphical position of Brunstatt and Kleinkems seems to be close to the Eocene-Oligocene boundary.

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified marl

• Deposited on the shore of a very large shallow saline lake (with an area of several hundred square kilometres) with episodical intrusion of fresh water.

Size classes: macrofossils, mesofossils

Preservation: mold/impression, adpression

Primary reference: B. Förster. 1891. Die Insekten der "Plattigen Steinmergels" von Brunstatt. Abhandlungen zur Geologischen Specialkarte von Elsass-Lothringen, Band 3 1:335-593 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 121475: authorized by Matthew Clapham, entered by Matthew Clapham on 04.12.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Hemiptera - Lygaeidae
"Pachymerus dryadum" = Aphanus pulchellus
"Pachymerus dryadum" = Aphanus pulchellus Heer 1853 milkweed bug
 Hemiptera - Cydnidae
Cydnus tertiarius Heer 1853 burrowing bug
7 total, not divided between collections
Cydnus armiger Förster 1891 burrowing bug
 Coleoptera - Staphylinidae
? Oxytelus levis n. sp. Förster 1891 rove beetle
 Coleoptera - Curculionidae
Tychius latus n. sp., "Baridium naviculare n. sp." = Baris naviculare
Tychius latus n. sp. Förster 1891 snout beetle
"Baridium naviculare n. sp." = Baris naviculare Förster 1891 snout beetle
 Coleoptera - Brentidae
Apion sulcatum n. sp. Förster 1891 weevil
 Diptera - Chironomidae
Chironomidae indet. Macquart 1838 non biting midge
larvae
 Diptera - Bibionidae
Plecia cf. rubescens Oustalet 1870 love bug