Fig. 2From: ‘Arm brains’ (axial nerves) of Jurassic coleoids and the evolution of coleoid neuroanatomyAcanthoteuthis speciosa Münster, 1839, HT 02/2, latest Kimmeridgian, Öchselberg Quarry near Zandt, Bavaria (Germany). Figure modified after Klug et al., (2016, suppl. Fig. 5). a UV-photo by HT; b drawing after aBack to article page