Spirorbis

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Spirorbis
Temporal range: Miocene–Recent[1]
Spirorbis spirorbis Scotland.jpg
Spirorbis spirorbis (modern)
Scientific classification
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Genus:
Spirorbis

Daudin, 1800
Species

see text

Spirorbis is a genus of very small (2–5 mm (0.079–0.197 in)) polychaete worms, usually with a white coiled shell. Members of the genus live in the lower littoral and sublittoral zones of rocky shores. Spirorbis worms usually live attached to seaweeds, but some species live directly on rocks, shells or other hard substrates. Spirorbis was once thought to have a fossil record extending back into the Early Paleozoic, but now all pre-Cretaceous spirorbins are known to be microconchids.[2] The earliest members of genus appeared in the Miocene, but Oligocene finds may also be possible.[1] The genus contains the following species:

References[edit]

  1. ^ a b Wiesner, E. (1962). "Spirorbis-Deckel aus dem Frankfurter Aquitan". Senckenbergiana Lethaea. 43: 367–374.
  2. ^ Taylor, P.D. & Vinn, O (2006). "Convergent morphology in small spiral worm tubes ("Spirorbis") and its palaeoenvironmental implications". Journal of the Geological Society. 163 (2): 225–228. doi:10.1144/0016-764905-145. Retrieved 2014-06-11.

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