Homotrypa

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]

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

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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