. Bulletin of the British Museum (Natural History). Symp Fig. 18 Halosaurus guentheri. Right palatoquadrate arch, medial aspect. ?P Ectp. Hyom 2 mm Symp Fig. 19 Notacanthus bonapartei. Left palatoquadrate arch, lateral aspect. Although I can find no trace of an ossified autopalatine in any halosaurid, I can see no reason why the cartilaginous anterior region of the palatopterygoid arch should not be identified as the autopalatine (see Fig. 18), nor why the nubbin of cartilage should not be the homologue of the similar body found in other fishes (including those elopomorphs in which an undoubte
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. Bulletin of the British Museum (Natural History). Symp Fig. 18 Halosaurus guentheri. Right palatoquadrate arch, medial aspect. ?P Ectp. Hyom 2 mm Symp Fig. 19 Notacanthus bonapartei. Left palatoquadrate arch, lateral aspect. Although I can find no trace of an ossified autopalatine in any halosaurid, I can see no reason why the cartilaginous anterior region of the palatopterygoid arch should not be identified as the autopalatine (see Fig. 18), nor why the nubbin of cartilage should not be the homologue of the similar body found in other fishes (including those elopomorphs in which an undoubted auto- palatine IS present; see above). Before going on to consider the identity of Gunther's 'singular nodule of cartilage' in nota- canths (Gunther, 1887: 246) and its possible homology with the autopalatine as suggested by 91. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. British Museum (Natural History). London : BM(NH)