Dipleurozoa
Sign in to saveAlso known as Dickinsoniomorpha, Dipleurozoan, Dipleurozoans, Dickinsoniomorph, Dickinsoniomorphs
Dipleurozoa (or Dickinsoniomorpha) are extinct proarticulate organisms of the Ediacaran period, which had a flat and more or less ovoid shape. Polychaete worms were treated, however it seems more likely that they were vendobionts. The most representative genus is Dickinsonia, which gives the name to the class (in the case of Dickinsoniomorpha).
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Dipleurozoa (or Dickinsoniomorpha) are extinct proarticulate organisms of the Ediacaran period, which had a flat and more or less ovoid shape. Polychaete worms were treated, however it seems more likely that they were vendobionts. The most representative genus is Dickinsonia, which gives the name to the class (in the case of Dickinsoniomorpha).
At first glance, the organisms appear to be bilateral that are made up of serial segments. However, this can be misleading, as there are indications that the structures to the left and right of the body axis were not arranged in pairs, but offset each other alternately; like the segments of many rangeomorphs.
Excerpted from Wikipedia’s “Dipleurozoa” article, available under the CC BY-SA 4.0 licence.