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Frauenweiler (Oligocene of Germany)

Also known as Grube Unterfeld; Bott-Eder clay pit; Rauenberg

Where: Baden-Württemberg, Germany (49.2° N, 8.8° E: paleocoordinates 48.6° N, 5.2° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: MP 22 mammal zone, Rupelian (33.9 - 28.4 Ma)

• "early Oligocene, Rupelian... MP 22" (Mayr 2007)

•fish and bird fossils are from the "Fish Shales," which are "about 10 m thick" and are overlain by an "about 40 m" thick clay interval called the Meletta-Layers (Micklich and Hildebrandt 2005)

Environment/lithology: estuary or bay; gray claystone

• "the sediments of Frauenweiler are marine and were deposited during a transgression caused by rifting activities (Mayr 2000)" and the exact environment probably was "a quiet, shallow and nutritious bay with some kind of shelter from the open sea" and could even have been a "brackwish water influence," but "the presence of larger estuaries or river mouths does not seem very likely" (Micklich and Hildebrandt 2005)
• the "fish shales... mostly consist of laminated, dark-grey argillaceous sediments" with a TOC of 4.0-5.5%, and the overall section consists of "dark-grey or black, compact, marly clay stones, which are very well laminated in certain sections" (Micklich and Hildebrandt 2005)

Size class: macrofossils

• "the [bird] fossils are completely disarticulated, with the bones being jumbled but nevertheless clo- sely associated" but "fish skeletons... are often fully articulated" (Mayr and Micklich 2010)

Preservation: adpression

Collected by Charles Knopf in 2009; reposited in the SMF, SMNS

Collection methods: quarrying

• SMF, SMNS, and HLMD collections

•most specimens were collected prior to 2009

Primary reference: G. Mayr. 2000. A new mousebird (Coliiformes: Coliidae) from the Oligocene of Germany. Journal of Ornithology 141(1):85-92 [J. Alroy/J. Alroy] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 68021: authorized by John Alroy, entered by John Alroy on 24.12.2006, edited by Mark Uhen and Patricia Holroyd

Creative Commons license: CC BY (attribution)