Fig. 2

Grimpoteuthis imperator sp. nov. ZMB MOLL 240160. a Habitus prior to MRI following several months in 10% formalin solution showing a right lateral view, anterior facing right. The overlay of a lateral view of the surface-rendered 3D model (Additional file 2) illustrates relative size and position of the reconstructed organ systems. b Oblique anterior view of the entire 3D model of selected internal organs. c Virtual section through the left white body, anterior facing left. d Central nervous system and selected sensory organs, dorsal view, anterior facing up. e Volume rendering of the left stellate ganglion, anterior facing left. f Digestive tract with associated organs, right lateral view, anterior facing right. g Specimen prior to μCT following several months in 70% ethanol solution, dorsal view, anterior facing up. Stippled frame denotes the μCT region of interest. h Virtual section through the 3D μCT dataset, anterior facing right. The asterisk denotes ingested sediment. i, j Right lateral and oral views of the surface-rendered 3D model of the upper beak (Additional file 3). k, l Left lateral and oral views of the lower beak. m Virtual section through the 3D μCT dataset showing the anterior part of the radula in sagittal section. n Volume rendering of the radula, oral view. The asterisk denotes ingested sediment, arrow points to the rhachidian tooth. o, p Dorsal and right lateral views of the shell, anterior facing down. Stippled line denotes the fin cartilage insertion. q, r Dorsal and left lateral views of the male reproductive system, anterior facing left