Feracrinus heinzelleri Bohn

• Main Author: Roux, Michel
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2015
• Subjects: Biodiversity; Taxonomy; Animalia; Echinodermata; Crinoidea; Hyocrinida; Hyocrinidae; Feracrinus; Feracrinus heinzelleri; Antarc*; antarcticus; Marie Byrd Land; Queen Maud Land; Ross Sea; Weddell Sea
• Online Access: https://doi.org/10.5281/zenodo.6095273; http://treatment.plazi.org/id/03FFAD25FFDDFFF45483FF4DA951F996

Feracrinus heinzelleri Bohn in Eléaume et al. , 2012 Figures 4–8, Tables 5–8. Synonymy: Ptilocrinus antarcticus John, 1937: 3 –8, fig. 3; Gislén, 1939: 3–5, figs. 1–7; Feracrinus heinzelleri Bohn in Eléaume et al. , 2012: 8–12, figs. 4–6; Eléaume et al. , 2014: 210–211. Material examined. USNM E48124, Weddell Sea, Queen Maud Land, W of Cape Norwegia, 71°40’S – 15°35’W, depth 1,445 m (1 specimen with nearly complete stalk and broken calyx and arms); USNM 1005435, Ross Sea, Marie Byrd Land, E of Pennell Bank, 74°06’ to 74°06’S –175°05’ to 174°58’W, depth 2,350 m (1 well-preserved crown with proximal stalk); USNM 1126892, Shetland Islands, 57°50’ to 57°54’S –56°51’ to 56°51’W, depth 3,788–3,944 m (1 crown with proximal stalk, and isolated arms only from one larger specimen); USNM 1126896, center of Ross Sea, 75°46’ to 75°52’S –168°51’ to 168°53’W, depth 2,049–2,089 m (2 specimens; one calyx with proximal arms, another with proximal arms and proximal half of stalk); USNM 1126873, Weddell Sea, 72°49’36”S – 30°29’42”W, depth 3,697 m (1 theca with proximal arms and proximal half of stalk). Emended diagnosis. A small to moderate size species with robust arms of proximal pattern 1+2 3 4 5+6 (92% of arms), with first pinnule on Br4 (6% on Br5); first free brachial beyond Br4 varying from Br7 to Br15 and usually fewer than 4 successive muscular articulations. Pinnules relatively robust and rigid; ratio of pinnule to arm length about 0.4; insertion deep, carved on arm side and indenting the following brachial; synarthrial articulation on brachial with strong symmorphy; concave cover plates varying from lanceolate to rounded; genital pinnule inflated with one row of additional H-shaped plates. Ratio of distal radial to primibrachial width 1.2–1.8 (usually 1.3–1.5). Tegmen with orals large and erect around mouth; anal cone more or less conspicuous in C–D inter-ray and bearing large bulging plates; ratio of anal cone to oral cone height 0.7–1.3 (usually 0.8–1.1). Conical aboral cup with ratio of cup height to distal diameter ...