Tunnel du Banne (Jurassic of Switzerland)

Also known as Le Banné, BAN

Where: Jura, Switzerland (47.4° N, 7.1° E: paleocoordinates 38.4° N, 16.0° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Reuchenette Formation, Kimmeridgian (157.3 - 152.1 Ma)

• The poorly preserved cranium MJSN SCR010-1214 originates from the Lower Virgula Marls (late Kimmeridgian, Reuchenette Formation, Chevenez Member, Eudoxus Ammonite Zone; Fig. 2; Comment et al., 2015). This level is rich in vertebrate and wood remains (Philippe et al., 2010; Leuzinger et al., 2017; Leuzinger, Püntener & Billon-Bruyat, 2017; Püntener, Anquetin & Billon-Bruyat, 2017b; Schaefer, Püntener & Billon-Bruyat, 2018). The better part of the turtle remains from the Porrentruy region comes from the Lower Virgula Marls (Anquetin, Püntener & Billon-Bruyat, 2015; Püntener, Anquetin & Billon-Bruyat, 2015, 2017a, 2020).

• group of beds-level stratigraphic resolution

Environment/lithology: limestone

• A more regional subdivision of the Reuchenette Formation is based upon lithology (Fig. 2). In ascending stratigraphic order, these are the Bann´e Marls (Gygi, 2000a; Jank et al., 2006), the Nerinean Limestones (Jank et al., 2006; Waite et al., 2008) with dinosaur footprint bearing layers (Marty and Hug, 2003; Marty et al., 2007; Marty, 2008), and the Virgula Marls (Jank et al., 2006). Most of the Tropidemys langii specimens were found in the ∼10-m-thick Bann´eMarls, which consist of “grey, decimeterthick layers of marlstones, calcarenitic marls, and marly limestones” (Jank et al., 2006:178). The Bann´e Marls are assigned to the Divisum ammonite zone of the Tethyan realm (Jank et al., 2006).

Size class: macrofossils

Collected by Palaeontology A16 in 2001-2006

Collection methods: surface (in situ), mechanical,

• Thanks to generous financial support from the Swiss Confederation, the archeological and paleontological material discovered during this construction was systematically collected and documented.

Primary reference: C. Puntener, J.-P. Billon-Bruyat, L. Bocat, J.-P. Berger, and W. G. Joyce. 2014. Taxonomy and phylogeny of the turtle Tropidemys langii Rutimeyer, 1873, based on new specimens from the Kimmeridgian of the Swiss Jura Mountains. Journal of Vertebrate Paleontology 34(2):353-374 [P. Mannion/J. Tennant]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 154717: authorized by Philip Mannion, entered by Jonathan Tennant on 04.03.2014, edited by Mihaela Krause and Evangelos Vlachos

Creative Commons license: CC BY (attribution)

Taxonomic list

• In recent years, several studies focussing on the rich Kimmeridgian strata in the region of Porrentruy (Fig. 1) were published, including articles on plant remains (Philippe et al., 2010), invertebrates (Schudack et al., 2013; Koppka, 2015), fishes (Leuzinger et al., 2015, 2017; Leuzinger, Püntener & Billon-Bruyat, 2017; Leuzinger et al., 2020), dinosaur tracks (Razzolini et al., 2017; Marty et al., 2018; Castanera et al., 2018), and turtles (Püntener et al., 2014; Anquetin, Püntener & Billon-Bruyat, 2015; Püntener, Anquetin & Billon-Bruyat, 2015, 2017a, 2020).
Show authors, comments, and common names
Reptilia
 Testudinata -
Solnhofia brachyrhyncha n. sp.1, Tropidemys langii
Solnhofia brachyrhyncha n. sp.1 Anquetin and Püntener 2020 turtle
Holotype. MJSN BAN001-2.1, a relatively completed, but crushed cranium (Figs. 3 and 4). MJSN BAN001-2.2 to MJSN BAN001-2.28, twelve costals, four peripherals, seven hyoplastra, and four hypoplastra found associated with the holotype, but representing at least five different individuals (Figs. 8, 10 and 14).
Tropidemys langii Rütimeyer 1873 turtle
Rhynchonellata
 Terebratulida - Cancellothyrididae
? Terebratulina sp.2
? Terebratulina sp.2 d'Orbigny 1847
 Terebratulida - Postepithyrididae
"Sellithyris subsella" = Xestosina subsella2
"Sellithyris subsella" = Xestosina subsella2 Leymerie 1846
1Anquetin and Püntener 2020; 2Sulser 2010