| Ausia fenestrata Temporal range: Ediacaran
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| Fossil and M. Fedonkin reconstruction of Ausia as sponge-like organism | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Subphylum: | Tunicata |
| Class: | Ascidiacea |
| Genus: | †Ausia Hahn and Pflug, 1985 |
| Species: | †A. fenestrata
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| Binomial name | |
| †Ausia fenestrata Hahn and Pflug, 1985[1]
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Ausia fenestrata is a curious Ediacaran period (635 – 539 million years ago)[2] fossil represented by only one specimen 5 cm long from the Nama Group, a Vendian to Cambrian group of stratigraphic sequences deposited in the Nama foreland basin in central and southern Namibia.[1] It has similarity to Burykhia from Ediacaran (Vendian) siliciclastic sediments exposed on the Syuzma River of Arkhangelsk Oblast, northwest Russia.[3][4][5] This fossil is of the form of an elongate bag-like sandstone cast (Nama-type preservation) tapering to a cone on one end. The surface of the fossil is covered with oval depressions ("windows") regularly spaced over the surface in the manner of concentric/parallel rows. The taxonomic identity of Ausia is unresolved.
- ^ a b Hahn, G.; Pflug, H. D. (1985). "Polypenartige Organismen aus dem Jung-Präkambrium (Nama-Gruppe) von Namibia". Geologica et Palaeontologica. 19: 1–13.
- ^ "Stratigraphic Chart 2022" (PDF). International Stratigraphic Commission. February 2022. Retrieved 25 April 2022.
- ^ "IGCP 493 Annual Report 2003" (PDF). Archived from the original (PDF) on 2008-07-21. Retrieved 2008-11-20.
- ^ Cite error: The named reference
Fedonkin_1996was invoked but never defined (see the help page). - ^ Cite error: The named reference
Oslo_2008was invoked but never defined (see the help page).
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