Grypania
From Infogalactic: the planetary knowledge core
| Grypania Temporal range: Paleoproterozoic–Mesoproterozoic
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| Grypania spiralis fossil | |
Scientific classification  |
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| Domain: | Eukaryota |
| Genus: | †Grypania Walter, Oehler & Oehler, 1976[1] |
| Type species | |
| Grypania spiralis Walter, Oehler & Oehler, 1976
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Grypania is an early, tube-shaped fossil from the Proterozoic eon. The organism could have been a giant bacterium or bacterial colony, but because of its size (over one centimeter) and consistent form, is more likely[citation needed] to have been a eukaryotic alga. The oldest probable Grypania fossils date to about 2.1 billion years ago,[2] and the youngest extended into the Mesoproterozoic era. Grypania reproduced asexually[citation needed].
References
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External links
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Wikimedia Commons has media related to [[commons:Lua error in Module:WikidataIB at line 506: attempt to index field 'wikibase' (a nil value).|Lua error in Module:WikidataIB at line 506: attempt to index field 'wikibase' (a nil value).]]. |
- Grypania spiralis (scroll down) in "Major Events in the History of Life"
- Grypania spiralis photo gallery, specimens from Negaunee Iron Formation, Michigan
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