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Arkarua information


Arkarua
Temporal range: Late Ediacaran, about 555 Ma
PreꞒ
O
S
D
C
P
T
J
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Pg
N
Artist's restoration
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Echinodermata (?)
Class: Edrioasteroidea (?)
Genus: Arkarua
Gehling, 1987
Species:
A. adami
Binomial name
Arkarua adami
Gehling, 1987

Arkarua adami is a small, Precambrian disk-like fossil with a raised center, a number of radial ridges on the rim, and a five-pointed central depression marked with radial lines of five small dots from the middle of the disk center. Fossils range from 3 to 10 mm in diameter.

Arkarua is known only from the Ediacaran beds of the Flinders Ranges in South Australia. The generic name refers to Arkaroo, a giant snake from the Dreaming of the local Aboriginal people.[1]

Arkarua is suggested to have been a passive suspension feeder.[2]

  1. ^ Gehling, J.G. (1987). "Earliest known echinoderm — a new Ediacaran fossil from the Pound Subgroup of South Australia". Alcheringa. 11: 337–345. doi:10.1080/03115518708619143.
  2. ^ García-Bellido, Diego C. (6 April 2021). "555 million-year-old fossils reveal early feeding strategies". Environment Institute Blog. The University of Adelaide. Archived from the original on 29 December 2023. Retrieved 29 December 2023.

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