FIGURE 7 in Deep-sea serpulids (Annelida: Polychaeta) in tetragonal tubes: on a tube convergence path from the Mesozoic to Recent

FIGURE 7. Photos and SEM images of Spirodiscus groenlandicus comb. nov. AM W.46398. A: tube photo, B–L: SEM images, B—anterior view of the tube entrance, C—anterior view of an animal, D—close-up view of radiolar crown with operculum, E—thoracic membranes, F—collar chaetae, G—thoracic uncini, H—thoracic uncini, I—abdominal chaeta, Jabdominal uncini, K and L—posterior part of abdomen showing flat geniculate and capillary chaetae.