. Bulletin of the British Museum (Natural History), Geology. Fig. 8 Vectichthys vectensis (Newton). Components of the upper jaw. A, right maxilla () in medial view; B, right premaxilla () in medial view; C, anterior supramaxilla (), see also Fig. 11C; D, posterior supramaxilla (). hypural (Hy 2), long and narrow, is fused with the anterior ural centrum (Ul). Hypurals 3 to 6 support the upper lobe of the caudal fin. The lowermost (Hy 3) is the widest. Dorsally, PU1 bears a short neural arch (). Three epurals (Ep 1-3) occur behind the neural arch of PU1 (Fig. 1
. Bulletin of the British Museum (Natural History), Geology. Fig. 8 Vectichthys vectensis (Newton). Components of the upper jaw. A, right maxilla () in medial view; B, right premaxilla () in medial view; C, anterior supramaxilla (), see also Fig. 11C; D, posterior supramaxilla (). hypural (Hy 2), long and narrow, is fused with the anterior ural centrum (Ul). Hypurals 3 to 6 support the upper lobe of the caudal fin. The lowermost (Hy 3) is the widest. Dorsally, PU1 bears a short neural arch (). Three epurals (Ep 1-3) occur behind the neural arch of PU1 (Fig. 11 A, C). The dorsal fin includes 15 or 16 rays (Newton, 1889, estimated 14 or 15). The first two (rarely three) are short and they are followed by a long articulated ray which is the longest of the fin; its length is about two-thirds of maximum body height. Posteriorly, 12 articulated and branched rays are present. The dorsal fin rays are generally supported by 13 or 14 rod-like pterygiophores which are relatively short, as only the proximal end of the first reaches the distal part of corresponding neural spines. The anal fin is of moderate size, comprising 16 to 20 fin rays. The first two are short while the third one, which is articulated but not branched, is the longest of the fin. Its length is slightly less than half the maximum height of the body. Posteriorly, there are 14-17 articulated and branched rays. The endoskeleton of the anal fin has 15-18 (occasionally 19) short, rod-like. 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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