Grypania
| Grypania Temporal range:
| |
|---|---|
| |
| Grypania spiralis fossil | |
| Scientific classification | |
| Domain: | |
| Genus: | Grypania Walter, Oehler & Oehler, 1976[1]
|
| Type species | |
| Grypania spiralis Walter, Oehler & Oehler, 1976
| |
Grypania is an early, tube-shaped fossil from the
alga.[2] The oldest probable Grypania fossils date to about 2100 million years ago (redated from the previous 1870 million)[2][3] and the youngest extended into the Ediacaran period.[4]
This implies that the time range of this taxon extended for 1200 million years.
References
- JSTOR 1303584.
- ^ PMID 1631544.
- ^ Schneider, D. A., Bickford, M. E., Cannon, W. F., Schulz, K. J., & Hamilton, M. A. (2002). Age of volcanic rocks and syndepositional iron formations, Marquette Range Supergroup: implications for the tectonic setting of Paleoproterozoic iron formations of the Lake Superior region. Canadian Journal of Earth Sciences, 39(6), 999-1012.
- ^ Wang, Y., Wang, Y., & Du, W. (2016). The long-ranging macroalga Grypania spiralis from the Ediacaran Doushantuo Formation, Guizhou, South China. Alcheringa: An Australasian Journal of Palaeontology, 1-10.
External links
Wikimedia Commons has media related to Grypania.
- Grypania spiralis (scroll down) in "Major Events in the History of Life"
- Grypania spiralis photo gallery, specimens from Negaunee Iron Formation, Michigan