Crisia aculeata Hassall 1841

• Main Authors: Moissette, Pierre, Antonarakou, Assimina, Kontakiotis, George, Cornée, Jean-Jacques, Karakitsios, Vasileios
• Format: Text
• Language: unknown
• Published: Zenodo 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Bryozoa; Stenolaemata; Cyclostomatida; Crisiidae; Crisia; Crisia aculeata; Hayward; Mitre; Norway; Northeast Atlantic
• Online Access: https://dx.doi.org/10.5281/zenodo.5796575; https://zenodo.org/record/5796575

Crisia aculeata Hassall, 1841 (Fig. 8 A-C) Crisia aculeata Hassall, 1841: 170, pl. 7, figs 3-4. — Harmer 1891: 132, pl. 12, fig. 4. — Hayward & Ryland 1985: 50, fig. 14. — Harmelin1990: 1602, figs 2, 3-6. OCCURRENCE. — Recent: Eastern Atlantic (50-60 m in the North Sea, much deeper in Norway, the Bay of Biscay and Morocco: 135- 1000 m) and Mediterranean (115-480 m). DESCRIPTION Cellariiform colony. Internodes short (8-12 zooids). The first ramification arises from the third zooid. Pseudopores elongate and relatively rare. Gonozooid pyriform with a discrete ooeciostome situated near the base of the following zooid. REMARKS This species is poorly known and has rarely been illustrated. It has often been considered as a variety of C. eburnea (Linnaeus) to which it resembles. Harmelin (1990) distinguished a northern (Atlantic) and a southern form (Atlantic coast of Morocco, Mediterranean). The main differences are a higher number of zooids (9-12) per internode and a mitre-shaped gonozooid in the southern form. : Published as part of Moissette, Pierre, Antonarakou, Assimina, Kontakiotis, George, Cornée, Jean-Jacques & Karakitsios, Vasileios, 2021, Bryozoan faunas at the Tortonian-Messinian transition. A palaeoenvironmental case study from Crete Island, eastern Mediterranean, pp. 1365-1400 in Geodiversitas 43 (26) on page 1380, DOI: 10.5252/geodiversitas2021v43a26, http://zenodo.org/record/5796571 : {"references": ["HASSALL A. H. 1841. - Catalogue of Irish Zoophytes. Annals and Magazine of Natural History 6: 166 - 175. https: // doi. org / 10.1080 / 03745484009443281", "HARMER S. F. 1891. - On the British species of Crisia. Quarterly Journal of Microscopical Science 32: 127 - 181. https: // www. biodiversitylibrary. org / page / 13833077", "HAYWARD P. J. & RYLAND J. S. 1985. - Cyclostome bryozoans. Synopses of the British Fauna, new series, 34: 1 - 147.", "HARMELIN J. - G. 1990. - Deep-water crisiids (Bryozoa: Cyclostomata) from the northeast Atlantic Ocean. Journal of Natural History 24: 1597 - 1616. https: // doi. org / 10.1080 / 00222939000770921"]}