Feracrinus aculeatus Mironov and Sorokina 1998a

Ameziane, Nadia & Roux, Michel, 2010, Stalked crinoids from Tasmanian seamounts. Part 1: Hyocrinidae, Journal of Natural History 45 (3 - 4), pp. 137-170 : 140-141

publication ID

https://doi.org/ 10.1080/00222933.2010.520825

persistent identifier

https://treatment.plazi.org/id/03E687BE-FF93-5168-FEA1-FC7B53A8FB56

treatment provided by

Felipe

scientific name

Feracrinus aculeatus Mironov and Sorokina 1998a
status

 

Feracrinus aculeatus Mironov and Sorokina 1998a View in CoL

Feracrinus aculeatus Mironov and Sorokina, 1998a: 410–414 View in CoL , figs 3 and 4 (5–6).

Mironov and Sorokina, 1998b: 20, fig. 5, pl. 2 (4–6) and 19 (1–2).

Ailsacrinus peripterus Mironov and Sorokina, 1998a: 405–408 , figs 1 and 4 (2–4). Roux et al., 2002: 822.

Ailsacrinus klikushini Mironov and Sorokina, 1998a: 408–410 , figs 2 and 4 (1).

Camaecrinus peripterus Mironov and Sorokina, 1998b: 22–23 , fig. 6, pl. 3 (1–2) and 10 (3).

Camaecrinus klikushini Mironov and Sorokina,1998b: 23–24 , fig. 7.

Emended diagnosis

A species of Feracrinus with relatively wide arm bases (ratio of upper radial width to Br1 width 1.2 to 1.5). Br1 usually larger than Br2. Brachial pairs united by synostosis, and brachials with two muscular articulations showing conspicuous constriction midway between their muscular articulations; stronger in small than in large specimens. Lateral flattened projection or thorns on proximal pinnulars and brachials. Rarely, series of three brachials united by synostoses beyond Br10. Beyond Br4, first brachial with two muscular articulations usually from Br7 to Br11, mostly Br7. Proximal part of genital pinnules with H-shaped additional plates. Tegmen moderately inflated in largest specimens, number of tegminal plates per inter-radius from 10 Note: N, number of specimens.

(small specimens) to more than 20, anal cone higher than oral cone. Orals with fingerlike projections. Height of aboral cup up to 15.3 mm. Ratio of height to maximum diameter of aboral cup 1.1–1.5, ratio of cup height to radial height 1.1–1.6, ratio of upper radial ring diameter to upper basal ring diameter 1.37–1.42. Proximalmost stalk diameter up to 3.8 mm. Juvenile columnal symplexies with seven or eight crenular units of one short crenula. In larger specimens, columnal symplexies with eight crenular units of one to three hieroglyph-like crenulae; distal syzygies with labyrinthic to irregular radial pattern.

Occurrence

Northwestern Pacific, depth 2915–3275 m.

Kingdom

Animalia

Phylum

Echinodermata

Class

Crinoidea

Order

Hyocrinida

Family

Hyocrinidae

Genus

Feracrinus

Loc

Feracrinus aculeatus Mironov and Sorokina 1998a

Ameziane, Nadia & Roux, Michel 2010
2010
Loc

Feracrinus aculeatus

Mironov AN & Sorokina OA 1998: 414
1998
Loc

Ailsacrinus peripterus

Roux M & Messing CG & Ameziane N 2002: 822
Mironov AN & Sorokina OA 1998: 408
1998
Loc

Ailsacrinus klikushini

Mironov AN & Sorokina OA 1998: 410
1998
Loc

Camaecrinus peripterus

Mironov AN & Sorokina OA 1998: 23
1998
Loc

Camaecrinus klikushini

Mironov AN & Sorokina OA 1998: 24
1998
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