| Werfen Formation | |
|---|---|
| Stratigraphic range: Changhsingian-Ladinian ~ | |
| Type | Formation |
| Unit of | Costabella Group |
| Sub-units | Campil, Cencenighe, Gastropod Oolite, Tesero Oolite, Mazzin, Siusi, Val Badia Members |
| Lithology | |
| Primary | Mudstone, lime mudstone, limestone |
| Other | Siltstone, sandstone, marl |
| Location | |
| Coordinates | 46ยฐ48โฒN 12ยฐ06โฒE๏ปฟ / ๏ปฟ46.8ยฐN 12.1ยฐE |
| Approximate paleocoordinates | 7ยฐ24โฒN 22ยฐ54โฒE๏ปฟ / ๏ปฟ7.4ยฐN 22.9ยฐE |
| Region | Upper Austria, Bolzano, South Tyrol, Trentino, Veneto |
| Country | Austria Italy Bosnia and Herzegovina |
| Extent | Dinaric, Southern Limestone & Salzburg Slate Alps, Tennen Mountains |
| Type section | |
| Named for | Werfen |
  Werfen Formation (Mediterranean) | |
The Werfen Formation is a geologic formation in the Southern Limestone Alps and Dinaric Alps of Austria, Bosnia and Herzegovina, and Italy. It preserves fossils dating back to the Triassic period.[1]
Fossil content
editThe formation has provided numerous fossils typical of a shallow lagoon environment, including:
- Eotiaris teseroensis (a crown-group echinoid from Changhsingian aged beds of the Tesero Member)[2]
- Orbicoelia sp. (a brachiopod)[2]
- Teserina nerii (a brachiopod)[2]
Griesbachian aged layers of the formation also preserve an unexpectedly diverse ichnotaxon assemblage, including the ichnogenera Catenichnus, Helminthopsis, Lockeia, Palaeophycus, Planolites, Rhizocorallium, Spongeliomorpha, Taenidium and Thalassinoides.[3]
See also
edit- List of fossiliferous stratigraphic units in Austria
- List of fossiliferous stratigraphic units in Bosnia and Herzegovina
- List of fossiliferous stratigraphic units in Italy
References
edit- ^ Werfen Formation at Fossilworks.org
- ^ a b c Thompson, Jeffrey R.; Posenato, Renato; Bottjer, David J.; Petsios, Elizabeth (2019). "Echinoids from the Tesero Member (Werfen Formation) of the Dolomites (Italy): implications for extinction and survival of echinoids in the aftermath of the end-Permian mass extinction". PeerJ. 7 e7361. doi:10.7717/peerj.7361. PMCย 6718154. PMIDย 31531267.
- ^ Hofmann, Richard; Goudemand, Nicolas; Wasmer, Martin; Bucher, Hugo; Hautmann, Michael (2011). "New trace fossil evidence for an early recovery signal in the aftermath of the end-Permian mass extinction". Palaeogeography, Palaeoclimatology, Palaeoecology. 310 (3โ4): 216โ226. Bibcode:2011PPP...310..216H. doi:10.1016/j.palaeo.2011.07.014.
Bibliography
edit- Thompson, Jeffrey R.; Posenato, Renato; Bottjer, David J.; Petsios, Elizabeth (2019), "Echinoids from the Tesero Member (Werfen Formation) of the Dolomites (Italy): implications for extinction and survival of echinoids in the aftermath of the end-Permian mass extinction", PeerJ, 7 e7361, doi:10.7717/peerj.7361, PMCย 6718154, PMIDย 31531267
- Foster, William J.; Danise, Silvia; Price, Gregory D.; Twitchett, Richard J. (2017), "Subsequent biotic crises delayed marine recovery following the late Permian mass extinction event in northern Italy", PLOS ONE, 12 (3) e0172321, Bibcode:2017PLoSO..1272321F, doi:10.1371/journal.pone.0172321, PMCย 5351997, PMIDย 28296886 Bibcode:2017PLoSO..1272321F
Further reading
edit- E. Farabegoli, M. C. Perri, and R. Posenato. 2007. Environmental and biotic changes across the Permian-Triassic boundary in western Tethys: The Bulla parastratotype, Italy. Global and Planetary Change 55:109-135
- E. Kustatscher, M. Wachtler, and J.H.A. Konijnenburg-van Cittert. 2004. A number of additional and revised taxa from the Ladinian flora of the Dolomites, Northern Italy. Geo.Alp 1:57-69
- R. Posenato. 2009. Survival patterns of macrobenthic marine assemblages during the end-Permian mass extinction in the western Tethys (Dolomites, Italy). Palaeogeography, Palaeoclimatology, Palaeoecology 280:150-167
- A. Bittner. 1890. Brachiopoden der alpinen Trias. Abhandlungen der Kaiserlich-Kรถniglichen Geologischen Reichsanstalt 14:1-325
