Fig. 16
From: Crinoids from the Middle Jurassic (Bajocian–Lower Callovian) of Ardèche, France
Pinnulation of cyrtocrinids. a Cyrtocrinus nutans (Goldfuss), Birmenstorf Member (Middle Oxfordian), Trimbach, Switzerland, M19836; adoral view to show the two pinnule sockets (bipinnulate condition). b Cyrtocrinus nutans (Goldfuss), Oxfordian, Streitberg, Bayerische Staatssammlung für Paläontologie und und historische Geologie München (Jaekel 1891); curled arm of rectangular brachials, b1 aboral view, b2 lateral view. c Living Neogymnocrinus richeri Bourseau et al., New Caledonia, M10980; specimen shows curled arm with pinnules on narrow, thickened part of brachials. d Cyrtocrinus praenutans n. sp., Lower Bathonian, La Pouza, paratype, M10848; adoral view with food grooves and pinnule socket (arrow), distal facet at upper side. e Cyrtocrinus praenutans n. sp., Lower Bathonian, La Pouza, M11033; adoral view of axillary second primibrachial with attached first secundibrachial. Arrows denote pinnule sockets. Scale bars 1 mm