Odaraia

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Odaraia alata
Temporal range: Cambrian Stage 3–Middle Cambrian
Odaraia alata.jpg
Fossil
Odaraia in a brine seep.png
Reconstruction of a dead Odaraia in a brine seep
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Subphylum:
Crustacea
Class:
Malacostraca (?)
Order:
†Hymenocarina
Family:
†Odaraiidae

Simonetta & Delle Cave, 1975
Genus:
†Odaraia

Walcott, 1912
Species:
†O. alata
Binomial name
†Odaraia alata
Walcott, 1912
Diagram

Odaraia is a genus of bivalved arthropod from the Middle Cambrian. Its fossils, which reach 15 centimetres (5.9 in) in length,[1] have been found in the Burgess Shale in British Columbia, Canada. 217 specimens of Odaraia alata are known from the Greater Phyllopod Bed, where they comprise 0.41% of the community.[2]

Odaraia bore a large pair of eyes at the front of its body,[1] and may have had two smaller eyes in between.[3] It had a tubular body with at least 45 pairs of biramous limbs, and its tail had three fins – two horizontal, one vertical – which were used to stabilise the animal as it swam on its back.[1]

It is currently classified as a member of Hymenocarina, a group containing many bivalved arthropods.[2]

Further reading

  • Simon Conway Morris (1997). The Crucible of Creation: the Burgess Shale and the Rise of Animals. Oxford University Press. ISBN 978-0-19-286202-0.
  • Hou Xian-Guang; Richard J. Aldridge; Jan Bergström; David J. Siveter & Feng Xiang-Hong (2004). The Cambrian Fossils of Chengjiang, China: the Flowering of Early Animal Life. John Wiley & Sons. ISBN 978-1-4051-0673-3.

References

  1. ^ a b c D. E. G. Briggs (1981). "The arthropod Odaraia alata Walcott, Middle Cambrian, Burgess Shale, British Columbia". Philosophical Transactions of the Royal Society B: Biological Sciences. 291 (1056): 541–582. Bibcode:1981RSPTB.291..541B. doi:10.1098/rstb.1981.0007. JSTOR 2395403.
  2. ^ a b Jean-Bernard Caron & Donald A. Jackson (2006). "Taphonomy of the Greater Phyllopod Bed community, Burgess Shale". PALAIOS. 21 (5): 451–465. Bibcode:2006Palai..21..451C. doi:10.2110/palo.2003.P05-070R. S2CID 53646959.
  3. ^ Graham E. Budd (2008). "Head structure in upper stem-group euarthropods". Palaeontology. 51 (3): 561–573. doi:10.1111/j.1475-4983.2008.00752.x. S2CID 85297530.

External links

  • "Odaraia alata". Burgess Shale Fossil Gallery. Virtual Museum of Canada. 2011.
  • Odaraia in the Paleobiology DatabaseError: "Q2160196" is not a valid Wikidata entity ID.
    Error: "Q21292502" is not a valid Wikidata entity ID.
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