Coleolid

<i>Coleoloides</i>

Coleoloides

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Coleoloides, or the coleolids, are a genus of Cambrian small shelly fossils with an aragonite skeleton.[1] They were first described in 1889 by Charles Doolittle Walcott as members of the pteropods.[2] Their affinity is unknown but they were probably produced by an organism of the annelid grade of complexity.[3]: 37  Calcium carbonate fossils of coleolids have been found at Newfoundland clustered together, oriented vertically.[4]

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References

  1. [1]
    Porter, S. M. (Jun 2007). "Seawater chemistry and early carbonate biomineralization". Science. 316 (5829): 1302. Bibcode:2007Sci...316.1302P. doi:10.1126/science.1137284. ISSN 0036-8075. PMID 17540895.
  2. [2]
    Walcott, C. D. (1889). "Stratigraphic position of the Olenellus fauna in North America and Europe". American Journal of Science. 37 (223): 388–9. doi:10.2475/ajs.s3-38.223.29.
  3. [3]
    Briggs, Derek E. G.; Crowther, Peter R. (2008). Palaeobiology II. John Wiley & Sons. ISBN 9780470999288.
  4. [4]
    McMenamin, M.A.; McMenamin, D.L. (1990). The Emergence of Animals. Columbia University Press. pp. 52–53. ISBN 0-231-06647-3.


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