Eozoon canadense
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Eozoon canadense (literally, "dawn animal of Canada") is a pseudofossil.
Dawson (1865) described the banded structures of coarsely crystalline calcite and serpentine as a gigantic Foraminifera, making it the oldest known fossil. It was found in Precambrian metamorphosed limestone of Canada, at Côte St. Pierre near Grenville (Quebec) in 1863 and other localities. Dawson called it "one of the brightest gems in the scientific crown of the Geological Survey of Canada". In 1895, it was shown that the place where it was found was associated with metamorphism.[1]
Similar structures were subsequently found in volcanic rocks at Mt. Vesuvius, where high-temperature physical and chemical processes were responsible for their formation.[citation needed]
[edit] References
- Dawson, J.W. (1865). On the structure of certain organic remains in the Laurentian limestones of Canada. Geol. Soc., London, Proc., Quart. Jour. 21: 51-59.
- Treatise on Invertebrate Paleontology, Part W - Miscellanea. Geological Society of America and University of Kansas Press, 1962. LCCN 53012913
- Swain, F.M. (2002). The Pseudofossil Atikokania in the Early Precambrian of Minnesota. PDF
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