Sur Combe Ronde (Lower Virgula Marls) (Jurassic of Switzerland)

Also known as Creugenat

Where: Jura, Switzerland (47.4° N, 7.0° E: paleocoordinates 38.4° N, 15.9° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Orthaspidoceras orthocera ammonoid zone, Chevenez Member (Reuchenette Formation), Late/Upper Kimmeridgian (155.7 - 150.8 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; marl

• "hardground within the Lower Virgula Marls." "reddish and strongly encrusted (Ostreidae, Serpulidae) hardground is dated from the Orthocera ammonite horizon."

Size class: macrofossils

Primary reference: C. Puntener, J. Anquetin, and J.-P. Billon-Bruyat. 2015. Thalassemys bruntrutana n. sp., a new coastal marine turtle from the Late Jurassic of Porrentruy (Switzerland), and the paleobiogeography of the Thalassemydidae. PeerJ 3:e1282:1-28 [P. Holroyd/P. Holroyd]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 180789: authorized by Patricia Holroyd, entered by Patricia Holroyd on 02.08.2016, edited by Evangelos Vlachos

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Terebratulida - Sellithyrididae
Sellithyris sp. Middlemiss 1959
Bivalvia
 Pholadomyida - Pholadomyidae
Pholadomya sp. Sowerby 1823 clam
 Pholadida - Ceratomyidae
Ceratomya sp. Sandberger 1864 clam
Gnathostomata
  -
Reptilia
 Loricata - Metriorhynchidae
Metriorhynchus sp. von Meyer 1830 marine crocodile
 Testudinata -
Thalassemys bruntrutana n. sp. Puntener et al. 2015 turtle
 Testudinata - Eurysternidae
"Eurysternidae" indet. Dollo 1886 turtle
Gnathostomata
  -
Chondrichthyes indet. Huxley 1880 cartilaginous fish
Steneosaurus bouchardi
  -
"Steneosaurus cf. bouchardi" = Proexochokefalos bouchardi
"Steneosaurus cf. bouchardi" = Proexochokefalos bouchardi von Huene 1925