Ausia fenestrata Temporal range: Ediacaran
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Fossil and M. Fedonkin reconstruction of Ausia as sponge-like organism | |
Scientific classification ![]() | |
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.
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