Wallenried WallA (Miocene of Switzerland)

Where: Fribourg, Switzerland (46.9° N, 7.1° E: paleocoordinates 45.9° N, 6.4° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: MN 2a mammal zone, Lower Freshwater Molasse Formation, Agenian (23.0 - 20.0 Ma)

• "The outcropping sediments form part of the ‘‘Molasse grise de Lausanne’’ Formation [Lower Freshwater Molasse (USM)] within the ‘‘Plateau Molasse’’ (Becker et al. 2001; Becker 2003) and are attributed to the Agenian [MN 2a] European land mammal age."

Environment/lithology: fine channel fill; fine-grained, sandy marl and sandstone

• The sedimentary architecture of the Wallenried quarry corresponds to a perennial meandering river system, with channel deposits and sandy bedforms dominated by medium to coarse sands and in decreasing granulometry from crevasse channel to floodplain deposits and/or oxbow lakes, with a predominance of fine-grained sediments. The mottled clayey to silty floodplain deposits relate to ephemeral ponds associated with seasonality in water supply.
• Sand and marl pit, the richest fossil localities comprise the base of a channel fill and fine-grained floodplain marls (e.g., WallA, WallE, WI.2, WIII.1).

Size classes: macrofossils, mesofossils

Collection methods: bulk, sieve

Primary reference: B. Mennecart, B. Yerly, P.-O. Mojon, C. Angelone, O. Maridet, M. Böhme, and C. Pirkenseer. 2016. A new Late Agenian (MN2a, Early Miocene) fossil assemblage from Wallenried (Molasse Basin, Canton Fribourg, Switzerland). Palaeontologische Zeitschrift 90:101-123 [T. Cleary/T. Cleary]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 203089: authorized by Terri Cleary, entered by Terri Cleary on 25.07.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

• Also listed are "fossil wood" and "fish vertebra"
unclassified
  -
 Charales - Characea
 Charales - Characeae
Gastropoda
  -
Gastropoda indet. Cuvier 1795 snail
 Stylommatophora - Limacidae
Limacidae indet. Lamarck 1801 slug
 Stylommatophora - Helicidae
Helicidae indet. Rafinesque 1815 slug
Deuteropoda
  -
Ostracoda indet. Latreille 1802 ostracod
Ostracoda
 Podocopida - Cyprididae
Cypridopsinae indet. Kaufmann 1960 ostracod
 Podocopida - Ilyocyprididae
unclassified
  -
Vertebrata indet. Lamarck 1801
Amphibia
 Salientia -
Anura indet. Fischer von Waldheim 1813 frog
 Caudata - Urodela
Salamandridae indet. Gray 1825 newt
Mammalia
 Placentalia -
Rodentia indet. Bowdich 1821 rodent
 Rodentia - Gliridae
Gliridae indet. Muirhead 1819 dormouse
Peridyromys murinus Pomel 1853 dormouse
Bransatoglis cf. infractolensis dormouse
subspecies "Bransatoglis cf. infractolensis ingens"
 Rodentia - Eomyidae
 Rodentia - Cricetidae
Cricetidae indet. Fischer von Waldheim 1817 mouse
Eucricetodon gerandianus Gervais 1848 mouse
Eucricetodon haslachensis Schaub 1925 mouse
 Placentalia -
Lagomorpha indet. Brandt 1885 placental
 Lagomorpha - Ochotonidae
 Artiodactyla -
"Cetartiodactyla indet." = Artiodactyla
"Cetartiodactyla indet." = Artiodactyla Owen 1848 even-toed ungulate
 Artiodactyla - Cainotheriidae
Cainotherium cf. gracile even-toed ungulate
 Artiodactyla -
Pecora indet. Linnaeus 1758 ruminant
 Artiodactyla - Moschidae
Reptilia
 Squamata - Viperidae
Viperidae indet. Oppel 1811 viper
 Squamata - Colubridae
Colubridae indet. Oppel 1811 colubrid snake
 Squamata - Lacertidae
Lacertidae indet. Bonaparte 1831 squamates
 Squamata - Anguidae
Ophisaurus sp. Daudin 1803 glass lizard
 Crocodylia -
Diplocynodon sp. Pomel 1847 crocodilian
Actinopteri
 Cypriniformes - Cyprinidae
Cyprinidae indet. Rafinesque 1815 carp-like fish