. Bulletin of the British Museum (Natural History), Geology. FISHES FROM THE LEBANON 249 two or three small, leaf-like and unsegmented. A rather large caudal scute (esc, Fig. 27) is present in front of both the upper and lower procurrent rays. As in Gaudryella, there is a single urodermal (ud) lying on the second ray below the upper- most principal ray. (xv) Squamation. The scales are more clearly visible than those of Gaudryella and must have been thicker. As in Gaudryella they are acellular, large and cycloid, with continuous, well separated circuli. There appear to be eight scales in a tran
. Bulletin of the British Museum (Natural History), Geology. FISHES FROM THE LEBANON 249 two or three small, leaf-like and unsegmented. A rather large caudal scute (esc, Fig. 27) is present in front of both the upper and lower procurrent rays. As in Gaudryella, there is a single urodermal (ud) lying on the second ray below the upper- most principal ray. (xv) Squamation. The scales are more clearly visible than those of Gaudryella and must have been thicker. As in Gaudryella they are acellular, large and cycloid, with continuous, well separated circuli. There appear to be eight scales in a transverse series on the trunk. There is a broad, continuous lateral line and as in Gaudryella the number of lateral line scales is approximately equal to the number of vertebrae. There are no scales on the cheek or operculum, and none on the bases of the fins. epl-3 h5 un3. Fig. 27. Humbertia operta gen. & sp. nov. Caudal skeleton as preserved in AM 5564, Hajula, Lebanon. Arrows mark the outermost (unbranched) principal fin-rays, explana- tion of abbreviations p. 296. (xvi) Soft anatomy. Muscle and retinal pigment are often preserved in the same manner as in Gaudryella, and fossilised gut contents ( PI. 4, fig. 2) show that the anus lay close in front of the anal fin. As in Gaudryella there is no evidence of an adipose fin. Chromatophores are sometimes preserved in specimens from Hajula as. 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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