Calyptotheca conica Cook 1965
Calyptotheca conica Cook, 1965 (Figures 3, 4; Tables 3, 4) Calyptotheca conica Cook, 1965: 437, pl. 1, figs 1–3. Material examined. Holotype: NHMUK 1892.1.28.76A, Holothuria Bank, off Cape Talbot, northwestern Australia, 15–32 fathoms, coll. Basset-Smith. Paratype: NHMUK 1892.1.28.76C, same data as...
| Main Authors: | , |
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| Format: | Other/Unknown Material |
| Language: | unknown |
| Published: |
2014
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| Subjects: | |
| Online Access: | https://zenodo.org/record/6126947 https://doi.org/10.5281/zenodo.6126947 |
| Summary: | Calyptotheca conica Cook, 1965 (Figures 3, 4; Tables 3, 4) Calyptotheca conica Cook, 1965: 437, pl. 1, figs 1–3. Material examined. Holotype: NHMUK 1892.1.28.76A, Holothuria Bank, off Cape Talbot, northwestern Australia, 15–32 fathoms, coll. Basset-Smith. Paratype: NHMUK 1892.1.28.76C, same data as holotype. Holothuria Bank, Kimberley, north-western Australia: NHMUK 1892.1.28.76G, same data as holotype. Bryomol Reef, GoC: MTQ G 26472, G 26509 (SEM stub), 16 ° 31.064 ' S, 139 ° 56.755 ' E, 33 m. Beagle Gulf, Northern Territory: MAGNT G 228, Stevens Rock, Darwin Harbour, 12.48556667 ° S, 130.78515 ° E, 8 November 2004, pebble in sand, 12 m, coll. K. Gowlett-Holmes; MAGNT G 27, Fish Reef, Bynoe Harbour, 12.414 ° S, 130.482 ° E, 6 October 1993, coarse sand and gravel, 17 m, coll. S.K. Horner; MAGNT G 22, Outer Darwin Harbour, 12.168 ° S, 130.782 ° E, 12 October 1993, mud and gravel, 30 m, coll. R.S. Williams; MAGNT G 5, Middle of Shoal Bay, 12.218 ° S, 130.933 ° E, 12 October 1993, sandy mud and sparse seagrass, 17 m, coll. R.S. Williams. Description of holotype. Colony a unilaminar, hollow cone, basal surface with rigid, hollow, calcareous hooks. Autozooids rectangular to hexagonal, longer than wide (c. 0.4 × 0.3 mm, Table 3). Frontal shield flattened to slightly convex, with regularly spaced, rounded pseudopores (average 42 per zooid), each in a pit, separated by more than the width of a pseudopore, extending to zooid borders, absent proximal to orifice. Interzooidal boundaries marked by thin, raised, sinuous suture lines that curve around marginal avicularia. Primary orifice rounded, wider than long (c. 0.09 × 0.10 mm), lunula extending to lateral edges of orifice, poster with wide, shallow sinus, condyles large, bilobed, knuckle-shaped, non serrate, ridged proximally. No suboral umbo. Adventitious avicularia small, oval to rounded-subtriangular, slightly longer than wide (c. 0.06 × 0.05 mm), marginal (borne laterally against interzooidal suture lines), oriented to centre of frontal shield; also occurring in each ... |
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