Reteporella watersi Denisenko et al. 2016
Reteporella watersi (Nordgaard, 1907) (Fig. 5; Table 3) Retepora beaniana var. watersi Nordgaard, 1907: p. 16; Kluge 1962, p. 529, 530, fig. 370. Reteporella watersi: Hayward 1994: p. 195, fig. 8A, B; Hayward & Ryland 1996: p. 111, fig. 3B; Hayward & Ryland 1999: p. 376, 377, fig. 178A–C. Ma...
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| Format: | Other/Unknown Material |
| Language: | unknown |
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2022
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| Online Access: | https://zenodo.org/record/6506291 https://doi.org/10.5281/zenodo.6506291 |
| Summary: | Reteporella watersi (Nordgaard, 1907) (Fig. 5; Table 3) Retepora beaniana var. watersi Nordgaard, 1907: p. 16; Kluge 1962, p. 529, 530, fig. 370. Reteporella watersi: Hayward 1994: p. 195, fig. 8A, B; Hayward & Ryland 1996: p. 111, fig. 3B; Hayward & Ryland 1999: p. 376, 377, fig. 178A–C. Material examined. ZIN 4 /50741, one colony; Stn 2016_PA_4_40 (61.9967333475749° N; ‒ 41.0106666664283° W; 234 m; T 3.9 °C); MT Paamiut, collected by Alfredo III trawl; fish-shrimp trawl assessment survey. July 2016. ZIN 5 /50745, one colony fragment; Stn 2016_PA_1_22 (64.5355499903361° N; ‒ 55.1436500072479° W; 563 m; T 4.12 °C); MT Paamiut, collected by BEAMTRAWL; fish-shrimp trawl assessment survey. July 2016. Description. The colony is reticulate, funnel-shaped, thickly calcified, robust and matte, up to 50 x 40 mm in size. The branches consist of 3–5 alternate series of zooids, increasing twice in width at points of fusion. Fenestrulae are relatively small, approximately 0.7‒0.9 mm long by 0.2–0.6 mm wide (Fig. 5A; Table 3). The basal surface is covered by kenozooids delimited by prominent vibices (Fig. 5B); the frontal and abfrontal surfaces are deeply pitted with a honeycomb structure. Autozooids (L = 0.35–0.75 mm; W = 0.25–0.42 mm) are located in the inner part of the funnel and delimited by sutures. Several large areolar pores are located near the zooidal margins. The orifice is wider than long, with a straight proximal margin; the upper distal rim is smooth and with short blunt denticles below (Fig. 5C). The orifice is partly hidden by a peristome, which has two unequal lobes that close to form a circular pseudosinus. The larger lobe bears an oval avicularium directed proximolaterally. The suboral avicularium is more or less parallel to the zooidal surface with a tall rim, and a few teeth on the distal rostrum; it has a complete crossbar without columella; the palate is a narrow shelf (Fig. 5C, D, F). Oral spines were not observed. The frontal avicularia are slightly smaller than the suboral ones, oval or ... |
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