Grypania
Early, tube-shaped fossil from the Proterozoic eon
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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.[2] 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 extended for 1200 million years.
| Grypania Temporal range: | |
|---|---|
| |
| Grypania spiralis fossil | |
Scientific classification  | |
| Domain: | incertae sedis |
| Genus: | †Grypania Walter, Oehler & Oehler, 1976[1] |
| Species: | †G. spiralis |
| Binomial name | |
| †Grypania spiralis Walter, Oehler & Oehler, 1976 | |
