. Bulletin of the British Museum (Natural History). I Fig. 36. H. eduardianus. Premaxillary teeth (right) anterior in position. Viewed from below and a httle laterally, to show labial aspect of the teeth. Scale = 0-25 mm. In the smallest available specimen (35 mm standard length), most teeth are like those of larger fishes, but in both jaws there are a few teeth with traces of a small lateral cusp. This minor cusp is not separated from the major one by a distinct gap, as in typical bicuspids. Instead, the demarcation between cusps is more in the nature of a narrow, V-shaped groove. Because a m
. Bulletin of the British Museum (Natural History). I Fig. 36. H. eduardianus. Premaxillary teeth (right) anterior in position. Viewed from below and a httle laterally, to show labial aspect of the teeth. Scale = 0-25 mm. In the smallest available specimen (35 mm standard length), most teeth are like those of larger fishes, but in both jaws there are a few teeth with traces of a small lateral cusp. This minor cusp is not separated from the major one by a distinct gap, as in typical bicuspids. Instead, the demarcation between cusps is more in the nature of a narrow, V-shaped groove. Because a minor cusp is present, the outline of these teeth is not rounded but is rather bluntly oblique. Posteriorly in the lower jaw of this small fish there are a few tricuspid teeth. There are 40-52 (M = 48) teeth in the outer row of the upper jaw ; the number not showing any correlation with the fish's size. Inner teeth {te,\t-fig. 37) in both jaws are tricuspid, with the crown compressed and strongly incurved ; arranged in 2 or rarely 3 rows in the upper jaw and a single (rarely double) row in the lower jaw. Virtually no interspace exists between the outer tooth row and the first row of inner Fig. 37. H. eduardianus. Dentary teeth (left), anterolateral in position. Viewed from medial aspect to show lingual face of teeth. Scale = 0'25 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 British Museum (Natural History). London : BM(NH)
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