Cyphotrypa is an extinct genus of Ordovician bryozoan. Its colonies form hemispherical shapes, with flat undersides and rounded tops. In cross-section, the zooecia (tubes housing individual zooids) fan out from the initial growth area and intersect the rounded top surface of the colony at right angles. A few scattered maculae are present, composed of a few zooecia larger than the others with mesopore-like apertures.[1]
Species
The following species are recognized:[2]
- †Cyphotrypa acervulosa Ulrich 1893
- †Cyphotrypa angularis Talent 1963
- †Cyphotrypa bulbosa Billings 1865
- †Cyphotrypa definita Morozova 1960
- †Cyphotrypa magna Boulange 1963
- †Cyphotrypa regularis Jiménez-Sánchez et al. 2015
References
- ^ 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.
- ^ "Cyphotrypa Ulrich and Bassler 1904 (bryozoan)". Palaeobiology Database.