Grypania
From Wikipedia, the free encyclopedia
| Grypania Temporal range: Paleoproterozoic–Ediacarian |
|
|---|---|
 |
|
| Grypania spiralis fossil | |
| Scientific classification | |
| Domain: | Bacteria / Eukarya ? |
| Type species | |
| Grypania spiralis Walter, Oehler & Oehler, 1976 |
|
Grypania is an early, tube-shaped fossil from the Proterozoic eon. The organism, with a size over one centimeter and consistent form, could have been a giant bacterium, a bacterial colony, or a eukaryotic alga.[1] The oldest probable Grypania fossils date to about 1870 million years ago (redated from the previous 2100 million)[2][3] and the youngest extended into the Ediacaran period.[4] This implies that the time range of this taxon extends along of 1200 million years.
References[edit]
- ^ Butterfield, N. J. (2015). Early evolution of the Eukaryota. Palaeontology, 58(1), 5-17.
- ^ T. M. Han & B. Runnegar (1992). "Megascopic eukaryotic algae from the 2.1-billion-year-old negaunee iron-formation, Michigan". Science. 257 (5067): 232–235. Bibcode:1992Sci...257..232H. doi:10.1126/science.1631544. 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[edit]
 |
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
 |
This prehistoric biota article is a stub. You can help Wikipedia by expanding it. |
