A new cyclocystoid from the Lower Ordovician of Öland, Sweden

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A new cyclocystoid from the Lower Ordovician of Öland, Sweden

  • Volume / Part: 30 / 1
  • Publication Date: March 1987
  • Page(s): 105 - 116
  • Authored By: Vivianne Berg-Madsen

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Monocycloides oelandicus gen. et sp. nov. is described from upper Arenig age beds on Oland, Sweden (Volkhov Stage, Langevoja Substage). The genus is monotypic and is the earliest known cyclocystoid echinoderm. Palaeogeographical origins of the cyclocystoids remain uncertain, but Monocycloides is regarded as a primitive sister group of the North American Ordovician Cyclocystoides.

Palaeontology - Volume 30 Part 1 Pages 105-116



Palaeontology - Volume 30 Part 1 Pages 105-116

Citations

BERG-MADSEN, V. 1987. A new cyclocystoid from the Lower Ordovician of Öland, Sweden. Palaeontology, 30, 1, 105–116.