Middle Triassic
 | This article needs additional citations for verification. (February 2024) |
| Middle Triassic | |
|---|---|
Epoch | |
| Stratigraphic unit | Series |
| Time span formality | Formal |
| Lower boundary definition | Not formally defined |
| Lower boundary definition candidates |
|
| Lower boundary GSSP candidate section(s) | |
| Upper boundary definition | FAD of the Ammonite Daxatina canadensis |
| Upper boundary GSSP | Prati di Stuores, Dolomites, Italy 46°31′37″N 11°55′49″E / 46.5269°N 11.9303°E |
| Upper GSSP ratified | 2008[6] |
In the
Formerly the middle series in the Triassic was also known as Muschelkalk. This name is now only used for a specific unit of rock strata with approximately Middle Triassic age, found in western Europe.[citation needed]
Middle Triassic life
Following the
gastropods).[citation needed
]
During the Middle Triassic, there were not yet any
seed ferns and gymnosperms. Small dinosauriforms began to appear, like Nyasasaurus and the ichnogenus Iranosauripus.[citation needed
]
-
Mixosaurus cornalianus restoration, a Middle Triassic ichthyosaur
References
- .
- PMID 17919771.
- ^ Retallack, G. J.; . Retrieved 2007-09-29.
- S2CID 35498132.
- ^ "International Chronostratigraphic Chart" (PDF). International Commission on Stratigraphy. December 2024. Retrieved January 1, 2025.
- . Retrieved 13 December 2020.
- ^ "ICS - Chart/Time Scale" (PDF). Archived from the original (PDF) on 2025-01-01. Retrieved 2025-01-14.
| Cenozoic Era (present–66.0 Ma) |
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| Mesozoic Era (66.0–252 Ma) |
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| Paleozoic Era (252–539 Ma) | |||||||
| Proterozoic Eon (539 Ma–2.5 Ga) |
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| Archean Eon (2.5–4 Ga) | |||||||
| Hadean Eon (4–4.6 Ga) | |||||||
ka = kiloannum (thousand years ago); Ma = megaannum (million years ago); Ga = gigaannum (billion years ago). See also: Geologic time scale •  Geology portal •  World portal | |||||||
