Homotrypa
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Bryozoa
Class: Stenolaemata
Order: †Trepostomida
Family: †Monticuliporidae
Genus: †Homotrypa
Ulrich, 1882[1]

Homotrypa is an extinct genus of bryozoans from the Ordovician and Silurian periods, known from fossils found in the United States. Its colonies are branch-like and have small monticules made of groups of three or four larger zooecia slightly protruding out from the main surface of the colony.[2][3] In cross section, the zooecia (tubes housing individual zooids) are erect in axis and gently curve toward the surface of the colony.[4]

Species

  • Homotrypa curvata (Ulrich, 1882)
  • Homotrypa niagarensis (Ernst, Brett and Wilson, 2019)[5]
  • Homotrypa anticostiensis (Bassler, 1928)
  • Homotrypa ramulosa (Bassler, 1903)

References

  1. ↑ "Genus Homotrypa Ulrich, 1882". FOSSIILID.INFO. Retrieved 26 February 2022.
  2. ↑ Loeblich, Alfred R. (July 1942). "Bryozoa from the Ordovician Bromide Formation, Oklahoma". Journal of Paleontology. 16 (4): 420–422.
  3. ↑ Nickles, John M; Bassler, Ray Smith (1900). A synopsis of American fossil Bryozoa, including bibliography and synonymy (PDF). Department of the Interior, United States Geological Survey. p. 29.
  4. ↑ Bork, Kennard B.; Perry, T.G. (1968). "Bryozoa (Ectoprocta) of Champlainian Age (Middle Ordovician) from Northwestern Illinois and Adjacent Parts of Iowa and Wisconsin. Part III. Homotrypa, Orbignyella, Prasopora, Monticulipora, and Cyphotrypa". Journal of Paleontology. 42 (4): 1042–1065.
  5. ↑ Ernst, Andrej; Brett, Carlton E.; Wilson, Mark A. (2019). "Bryozoan fauna from the Reynales Formation (lower Silurian, Aeronian) of New York, USA". Journal of Paleontology. 93 (4): 628–657. doi:10.1017/jpa.2018.101. S2CID 135188343.


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