Fig. 4

Photomicrographs of Tintinnopsis kiaochowensis in vivo (a–d) and after protargol staining (e–k). a Lateral view of a representative individual. b Different individual showing lorica variation. c Elongated anterior cilia of the right and left ciliary fields (arrowhead). d Pressed lorica showing aligned particles. e, f Arrowheads mark endoral membrane. g Collar membranelles. h Ventral side; arrowhead shows the lateral ciliary field. i Dorsal side of the same specimen as in (h). j Dorsal (arrowhead) and posterior kinety. k Subapical view, showing the left ciliary field and dorsal kinety. CM, collar membranelle; DK, dorsal kinety; LF, left ciliary field; PK, posterior kinety; RF, right ciliary field; VK, ventral kinety. Scale bars = 45 μm (a, b, d), 15 μm (h, i), 20 μm (j)