Tessaradoma Norman 1869 ...

• Main Author: Arakawa, Shinji
• Format: Text
• Language: unknown
• Published: Zenodo 2024
• Subjects: Biodiversity; Taxonomy; Animalia; Bryozoa; Gymnolaemata; Cheilostomatida; Tessaradomidae; Tessaradoma; Arctic; Hayward
• Online Access: https://dx.doi.org/10.5281/zenodo.10928774; https://zenodo.org/doi/10.5281/zenodo.10928774

Genus Tessaradoma Norman, 1869 Diagnosis. Colony erect, unjointed, attached by encrusting base. Frontal shield striated, granular, or smooth, with an umbonuloid component and marginal pores. Tubiform spiramen present. Primary orifice semicircular, concealed by projecting peristome. Adventitious avicularia present or absent. Ovicell peristomial, imperforate. Type species. Pustulipora gracilis Sars, 1851. Remarks. The type species is now regarded as a synonym of Tessaradoma boreale (Busk, 1860) (originally Onchopora borealis) (e.g., Hayward and Ryland 1979, 1999; Winston 2005; Denisenko 2014), but I believe that T. boreale from the Atlantic and Arctic Oceans may include two or more species as discussed by Winston (2005) and Souto et al. (2016), although Sars (1863) also considered Busk’s species as the synonym of T. gracile. Illustrations of the Arctic species (Smitt 1868; Kluge 1962) show smaller marginal pores and avicularia, and a more highly projecting peristome than the European species from Britain (Busk ... : Published as part of Arakawa, Shinji, 2024, Descriptions of Three Cheilostomatid Bryozoan Species from the Continental Shelf off Boso Peninsula, Japan, pp. 99-110 in Species Diversity 29 (1) on page 100, DOI: 10.12782/specdiv.29.99, http://zenodo.org/record/10928489 ...