Fig. 9
From: A review of the genus Muusoctopus (Cephalopoda: Octopoda) from Arctic waters
Muusoctopus sp. 1. Beak and radula. GRL-PA-7–20-1–2016 (late immature male, mantle length 30 mm, northern Baffin Bay): upper (a) and lower (c) beak, and unworn sections of radula (b, d). Scale bars: a, c = 1 mm, b, d = 100 µm. Abbreviations: l1, first lateral tooth; l2, second lateral tooth; m, marginal tooth; r, rachidian tooth