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 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Bryozoa |
| Class: | Stenolaemata |
| Order: | †Trepostomida |
| Family: | †Monticuliporidae |
| Genus: | †Homotrypa Ulrich, 1882[1] |
Species
edit- Homotrypa curvata (Ulrich, 1882)
- Homotrypa niagarensis (Ernst, Brett and Wilson, 2019)[5]
- Homotrypa anticostiensis (Bassler, 1928)
- Homotrypa ramulosa (Bassler, 1903)
References
edit- ^ "Genus Homotrypa Ulrich, 1882". FOSSIILID.INFO. Retrieved 26 February 2022.
- ^ Loeblich, Alfred R. (July 1942). "Bryozoa from the Ordovician Bromide Formation, Oklahoma". Journal of Paleontology. 16 (4): 420–422.
- ^ 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.
- ^ 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.
- ^ 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. Bibcode:2019JPal...93..628E. doi:10.1017/jpa.2018.101. S2CID 135188343.
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