Trepostomida

Trepostomatida

Trepostomatida

Extinct order of moss animals

Trepostomatida (the trepostomates) is an extinct order of bryozoans in the class Stenolaemata. Trepostome bryozoans possessed mineralized calcitic skeletons and are frequently fossilized; some of the largest known fossilized bryozoan colonies are branching trepostomes and massive dome-shaped trepostomes. [3] Trepostomes did not have many specialized zooecia beyond ordinary feeding autozooecia. The two main known heteromorphs are exilazooecia and mesozooecia, which had the purpose of maintaining regular spacing between autozooecia. [4]

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Trepostome bryozoan with bioerosion; Bellevue Formation, Upper Ordovician (Katian), northern Kentucky.

See also

References

  1. [1]
    Redescription of type specimens of bryozoan Stigmatella from the Upper Ordovician of the Toronto region, Ontario (1973). By Fritz, Madeleine A., 1896, Royal Ontario Museum
  2. [2]
    New Monticuliporidae (Bryozoa, Trepostomata) from the Cystoid Limestone Formation (Upper Ordovician) of the Iberian Chains (NE Spain). Jimenez-Sanchez Andrea, Geodiversitas, 2010, vol. 32, no2, pages 177-199, INIST 22896890
  3. [3]
    Ernst, Andrej (2020). "2- Fossil record and evolution of Bryozoa". Phylum Bryozoa. pp. 11–56.
  4. [4]
    Ernst, Andrej (2020). "2- Fossil record and evolution of Bryozoa". Phylum Bryozoa. p. 19.
Heterotrypa sp., a trepostome bryozoan from the Corryville Formation (Upper Ordovician) in Covington, Kentucky.


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