Figure 10 in A new ichthyosaur from the Late Jurassic of north- west Patagonia (Argentina) and its significance for the evolution of the narial complex of the ophthalmosaurids

Figure 10. Generalized ophthalmosaurid skulls, illustrating the different hypotheses related to the function of the bony nostrils lobes. A, anterior lobe as outlet for the secretion of the salt gland and posterior lobe as entrance for the air stream. B, anterior lobe as entrance for the air stream and posterior lobe as outlet for the secretion of the salt gland. C, anterior lobe reduced and posterior lobe fulfilling both functions. Green structure surrounded by black dashed line, salt gland; green arrow, salt gland secretion; red arrow, air flow.