Wallenried Channel layer: Agenian, Switzerland

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Vertebrata indet. Lamarck 1801
Mennecart et al. 2016
Mammalia - Lagomorpha
Lagomorpha indet. Brandt 1885
Mennecart et al. 2016
Mammalia - Lagomorpha - Ochotonidae
Prolagus aff. praevasconiensis
Mennecart et al. 2016
Mammalia - Rodentia
Rodentia indet. Bowdich 1821
Mennecart et al. 2016
Mammalia - Rodentia - Cricetidae
Cricetidae indet. Fischer von Waldheim 1817
Mennecart et al. 2016
Eucricetodon aff. gerandianus Gervais 1848
Mennecart et al. 2016
Mammalia - Rodentia - Eomyidae
Eomyidae indet. Winge 1887
Mennecart et al. 2016
Mammalia
Cetartiodactyla indet. Montgelard et al. 1997
Mennecart et al. 2016
synonym of Artiodactyla
Mammalia - Moschidae
Friburgomeryx wallenriedensis
Mennecart et al. 2016
Mammalia - Andegamerycidae
Andegameryx andegaviensis
Mennecart et al. 2016
Reptilia
Testudinata indet. (Oppel 1811)
Mennecart et al. 2016
there is another turtle identified here, "Ergilemys vel. [or] Geochelone", but since it could be either I haven't added it to the list here
Reptilia - Anguidae
Ophisaurus sp. Daudin 1803
Mennecart et al. 2016
Reptilia
Crocodylia indet. (Owen 1842)
Mennecart et al. 2016
spelled "Crocodilia" in ref
Gastropoda - Heterostropha - Helicidae
Helicidae indet. Rafinesque 1815
Mennecart et al. 2016
Gastropoda - Heterostropha - Limacidae
Limacidae indet. Lamarck 1801
Mennecart et al. 2016
see common names

Geography
Country:Switzerland State/province:Fribourg
Coordinates: 46.9° North, 7.1° East (view map)
Paleocoordinates:45.9° North, 6.4° East
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period:Neogene Epoch:Miocene
10 m.y. bin:Cenozoic 5
Key time interval:Agenian Mammal zone: MN 2a
Age range of interval:23.03000 - 20.00000 m.y. ago
Stratigraphy
Formation:Lower Freshwater Molasse
Stratigraphy comments: "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." - Mennecart et al (2016)
Lithology and environment
Primary lithology:fine,medium,coarse sandstone
Includes fossils?Y
Lithology description: Although not explicitly stated, presumably structured as described in the general "Channel" section of Becker et al (2001). Fine to coarse sand, sometimes with mud balls.
Environment:coarse channel fill
Geology comments: 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.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection methods:bulk,sieve
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:203093
Authorizer:T. Cleary Enterer:T. Cleary
Modifier:T. Cleary
Created:2019-07-25 12:06:48 Last modified:2019-07-25 12:07:40
Access level:the public Released:2019-07-25 12:06:48
Creative Commons license:CC BY
Reference information

Primary reference:
69531. D. Becker, G. E. Rössner, L. Picot and J.-P. Berger. 2001. Early Miocene ruminants of Wallenried (USM, Aquitanian/Switzerland): sedimentology, biostratigraphy and paleoecology. Eclogae Geologicae Helvetiae 94:547-564 [T. Cleary/T. Cleary]

Secondary references:

69528 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]