Brunn Quarry layer 2 (Jurassic of Germany)

Where: Eastern Barvaria, Germany (49.1° N, 11.9° E: paleocoordinates 40.4° N, 20.0° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Sutneria subeumela ammonoid zone, Late/Upper Kimmeridgian (155.7 - 150.8 Ma)

• Finds of the index ammonite Sutneria subeumela in both the lower and upper part of the section constrain the age of the entire locality to the Subeumela Subzone of the Upper

•Kimmeridgian (Röper & Rothgaenger 1997; Schweigert 2007; Heyng et al. 2015).

•... the almost perfectly articulated rhynchocephalians were derived from Plattenkalk layer 2

Environment/lithology: lagoonal or restricted shallow subtidal; calcareous mudstone

• Due to sea-level changes, the Plattenkalk facies progressed from east to west from the Upper Kimmeridgian to the Tithonian (Viohl 2015a), with laminated limestones

•being deposited in shallow depressions (“Wannen”) between the reef complexes. The locality of Brunn is situated at the southern rim of one of the smallest of these depressions, the Pfraundorf-Heitzenhofener Basin.

•... the rarity of the fully marine chondrichthyans supports the interpretation of Brunn as a rather isolated, marginal marine, probably lagoonal environment (Röper & Rothgaenger 1997; Heyng et al. 2015).

• The section of the Brunn quarry exposes c. 8 m of sediments, presenting an intercalation of massive limestone layers and eight finely laminated Plattenkalk sections (Röper et al. 1996; Röper & Rothgaenger 1997; Heyng et al. 2015). Whereas the massive limestone layers are almost devoid of macrofossils, fossil remains were otherwise found

•throughout the section in the laminated limestones. The latter layers range from 10 to 80 cm in thickness and are often very finely laminated, with 1 cm of Plattenkalk

•including up to 70 distinct limestone laminae (Heyng et al. 2015).

Size class: macrofossils

Collected by Monika Rothgaenger in 2002; reposited in the BSP

Collection methods: quarrying, mechanical

• Starting around 1990 some well-preserved fossils were discovered by collectors, and the first scientific excavations took place soon afterwards. These yielded many fossil plants and numerous invertebrate and vertebrate taxa.

•The specimen was found in summer 2002 during an investigation of the Brunn quarry by Monika Rothgaenger, who was at the time in charge of the privately organised scientific excavation in cooperation with the Bavarian State Collection for Palaeontology, Munich and the Solnhofen Museum, Bavaria. The specimen was subsequently prepared by freelance preparator Martin Kapitzke in Stuttgart before coming to the Solnhofen Museum in 2003. While permanently housed in the Solnhofen Museum as specimen BSP–1993–XVIII–2 (formerly curated as BSP XVIII–VFKO–A12), the material is owned by Bavarian State Collection for Palaeontology and Geology, Munich, Bavaria, Germany (BSP).

Primary reference: O. W. M. Rauhut, A. López-Arbarello, M. Röper and M. Rothgaenger. 2017. Vertebrate fossils from the Kimmeridgian of Brunn: the oldest fauna from the Solnhofen Archipelago (Late Jurassic, Bavaria, Germany). Zitteliana 89:305-329 [P. Barrett/T. Cleary/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 187437: authorized by Paul Barrett, entered by Terri Cleary on 28.07.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

• many fossil plants and numerous invertebrate and vertebrate taxa
 Rhynchocephalia -
Rhynchocephalia "indet. 1" rhynchocephalian
SNSB-BSPG 1993 XVIII 3; SNSB-BSPG 1993 XVIII 11, large complete specimens, new spp
Rhynchocephalia "indet. 2" rhynchocephalian
SNSB-BSPG 1993 XVIII P12, juvenile complete skeleton
 Rhynchocephalia - Sphenodontidae
Sphenodontidae indet. Cope 1869 rhynchocephalian
SNSB-BSPG 1993 XVIII 4, complete skeleton, new spp