Hotwiel, Hombrechtikon, Zürich (Miocene of Switzerland)

Where: Zürich, Switzerland (47.3° N, 8.8° E: paleocoordinates 47.5° N, 7.4° E)

• coordinate based on nearby landmark

When: MN 5 (16.0 - 13.7 Ma)

• MN5"b"; Obere Süßwassermolasse (upper Freshwater Molasse);

•130m (profile meter) above the Hüllistein marker bed.

•After Bollinger 1992: MN5/6. After Bollinger 1994: MN5"b" (=middle MN5).

Environment/lithology: fluvial-lacustrine; carbonaceous marl

• Floodplain with channels and lacustrine deposits

Size class: macrofossils

Collection methods: bulk, chemical, sieve,

• 60 mammal teeth

Primary reference: T.h. Bollinger. 1992. Kleinsäugerstratigraphie in der miozänen Hörnlischüttung (Ostschweiz); (Biostratigraphy of small mammals in the Hörnlischüttung of Miocene age (East Switzerland)). Documenta naturae 75:1-296 [J. Alroy/S. Kuemmell/S. Kuemmell]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 46234: authorized by John Alroy, entered by Susanna Kümmell on 09.01.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Lagomorpha - Ochotonidae
Lagopsis verus Hensel 1856 pika
Prolagus oeningensis König 1825 pika
 Rodentia - Cricetidae
Eumyarion bifidus Fahlbusch 1964 mouse
Democricetodon mutilus Fahlbusch 1964 mouse
"Democricetodon gracilis" = Democricetodon minor gracilis Fahlbusch 1964 mouse
Megacricetodon cf. minor Lartet 1851 mouse
Megacricetodon minor Lartet 1851 mouse
 Rodentia - Gliridae
Miodyromys hamadryas Forsyth Major 1899 dormouse
ssp.
Microdyromys praemurinus Freudenberg 1941 dormouse
 Rodentia - Sciuridae
Heteroxerus sp. Stehlin and Schaub 1951 squirrel
 Rodentia - Eomyidae
Keramidomys carpathicus Schaub and Zapfe 1953 rodent
 Artiodactyla -
 Theriamorpha - Erinaceidae
 Theriamorpha - Soricidae
Angiospermae
 Typhales - Commelinidae
Sparganium sp. Linnaeus 1753 bur-reed
 Rosales - Ulmaceae
Celtis sp. Linnaeus 1753 hackberry