Pseudoconocrinus Roux, Eléaume and Améziane, 2019

Roux, Michel, Martinez, Alain & Vizcaïno, Daniel, 2021, A diverse crinoid fauna (Echinodermata, Crinoidea) from the Lower Eocene of the Gulf of Languedoc (Corbières, Aude, southern France), Zootaxa 4963 (2), pp. 201-242 : 212

Genus Pseudoconocrinus Roux, Eléaume and Améziane, 2019

Type species. Conocrinus doncieuxi Roux, 1978a , lower Ypresian .

Emended diagnosis. Aboral cup shape highly variable but never inverted conical, except in some juveniles; sutures between aboral cup ossicles often conspicuous. Distal face of radial circlet with small central depression (ratio to radial circlet diameter 0.20–0.30), long conspicuous interradial crests separating large subtrapezoidal muscular synarthries, arm sockets about as wide as radials, muscular areas moderately concave with inner side slightly erect or not at all. Arms divided at IBr2ax, synostosial symmorphy at IBr1+2 without trifascial pattern, IBr1 short and substantially wider than high, IBr2ax regularly pentagonal, occasionally two kinds of axillaries found in association with aboral cups: a large one which is wider than tall, and a smaller one which is substantially taller than wide, suggesting change during growth ontogeny or possible additional branching, free arms with frequent brachial pairs (two IIBr united by flat synostosis). Occasionally proxistele well differentiated with thick discoidal columnals, progressive transition from mesistele to dististele with numerous columnals bearing thin rhizoids.

Remarks. Pseudoconocrinus differs mainly from other Eocene and Recent rhizocrinid genera in having arms dividing at IBr2ax.

Stratigraphical distribution. Danian–Ypresian.