Fig. 9
From: Triassic: the crucial period of post-Palaeozoic crinoid diversification
Brachial arrangement and pinnulation in Encrinida: a trend from uniserial to biserial arms. a Dadocrinus kunischi, uniserial brachia, widely spaced pinnules, Lower Gogolin Formation, Gogolin (Poland), MHI 1284/1. b Encrinus liliiformis, juvenile individual with wedge-shaped uniserial brachials, Upper Muschelkalk, Trochitenkalk Formation, Mistlau/Jagst (Germany), IGPT 1525/6. c Carnallicrinus carnalli, immature biseriality of low wedge-shaped brachials, wide zigzag-suture, medium spaced pinnules, Lower Muschelkalk, Jena Formation, Freyburg/Unstrut (Germany), MHI 1602 (same specimen as in Fig. 8c). d Encrinus liliiformis, mature biseriality, narrow zigzag-suture, densely spaced pinnules, Upper Muschelkalk, Trochitenkalk Formation, Neckarwestheim (Germany), MHI 1116/5. e Traumatocrinus hsui, adult individual, 4 mature biserial major arms and densely spaced pinnules (pinnules on armlets not to be seen), Xiaowa Formation, Guanling (China), MHI 1882/5. f Traumatocrinus hsui, same individual, major arms and biserial armlets branching distally at axillaries with dorsal spines, Xiaowa Formation, Guanling (China), MHI 1882/5. Scales 10 mm