Stenolaemata

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Stenolaemata
Hallopora sp.

Hallopora sp.

Temporal occurrence
Ordovician to this day
488 million years to date
Locations
  • worldwide
Systematics
without rank: Tissue animals (Eumetazoa)
without rank: Bilateria
without rank: Primordial mouths (protostomia)
Over trunk : Lophotrochozoa (Lophotrochozoa)
Trunk : Bryozoans (Bryozoa)
Class : Stenolaemata
Scientific name
Stenolaemata
Borg , 1926

The stenolaemata form a class of bog animals (Ectoprocta, also called Bryozoa), which occurs exclusively in salt water ( marine ). This class includes only a recent order , the Cyclostomata , with approx. 175 genera and was particularly widespread in the Cretaceous period . The extinct orders of this class include a. the Cystopora and Cryptostomata . The first fossils of the stenolaemata come from the Ordovician .

construction

The cystids are long, cylindrical and pointed at the back and do not have an occluding device. Open pores between the neighboring animals allow an exchange of substances, there are no body wall muscles and egg development takes place in the gonozoids.

Systematics

swell

  • Rieger, Reinhard; Westheide, Wilfried: Special Zoology 1 Spectrum; Stuttgart 2006; ISBN 3-8274-1575-6
  • Hennig, Dr. Willi: Invertebrates I. Pocket book of special zoology. Jena: Fischer 1994; ISBN 3-8252-1831-7
  • Remane, Adolf; Storch, Volker; Welsch, Ulrich: Systematic Zoology. Berlin: Spectrum Academic Publishing House 2003; ISBN 3-8274-1112-2
  • Ulrich Lehmann and Gero Hillmer: Invertebrates of prehistoric times: Guide to the systematic paleontology of invertebrates. 2nd edition, Stuttgart: Ferdinand Enke-Verlag Stuttgart, 1988; ISBN 3-432-90652-8
  • Borg, Folke: Studies on Recent Cyclostomatous Bryozoa . In: Zoologiska bidrag från Uppsala , Volume 10, pp. 181–507, 1926

Web links

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