Fig. 6 in Dorsolateral head muscles of the catfish families Nematogenyidae and Trichomycteridae (Siluriformes: Loricarioidei): comparative anatomy and phylogenetic analysis

Fig. 6. Ventral view of left half of neurocranial floor and suspensorium of Copionodon pecten (Copionodontinae), LIRP 1012 (49.5 mm SL). Internal suspensorial muscles and upper pharyngeal tooth plate with attached levator internus 4 retained; remaining elements of branchial arches removed. Arrow indicates site of origin of adductor operculi.