Fig. 9

Balanocrinus brachiospina n. sp. early Late Oxfordian, Savigna (a–c) and Early Oxfordian, Andelot-Morval (d–n). a Part of median arm with pinnules, M11369; this specimen is from the locality Petit Buis at the top of the Savigna outcrop. b Proximal facet of secundibrachial with twin thorns, M11370. c Distal, cryptosynarthrial facet of first primibrachial with lateral lappets, M11371. d Distal facet of secundibrachial with pinnule socket, M11372. e Distal facet of secundibrachial from distal part of arm with pinnule socket, M11373. f Proximal facet of secundibrachial with curved thorn, M11374. g Distal facet of hyposynostosial secundibrachial, other facet is muscular without pinnule socket, the straight side suggests that brachial is from proximal part of arm, M11375. h Proximal, cryptosyzygial facet of episymmorphial secundibrachial, other side is muscular with pinnule socket, M11376. i Distal facet of skew hyposynostosial secundibrachial, M11377. j Distal facet of large secundibrachial with pinnule socket and nipple, M11378. k First primibrachial, M11379, k1 proximal facet, note scalloped muscle fossae, k2 distal, cryptosynarthrial facet. l Radial, M11380, l1 distal-aboral view, note narrow, scalloped muscle fossae, l2 proximal-adoral view, note nerve canals to basals and to neighbouring radials. m Distal facet of secundibrachial with pinnule socket, lack of thorn and large size indicate position in proximal part of arm, M11381. n Distal facet of skew secundibrachial with pinnule socket, lack of thorn suggests position in proximal part of arm, note resemblance to e; M11382