. Bulletin of the British Museum (Natural History) Zoology. . Fig. 15 Dorsal fins of: a. Onychostoma sima b. Scaphesthes barbatulus c. Onychostoma lini d. Scaphiodonichthys burmanicus e. Varicorhinus beso. character restricted to these two taxa. However, in view of the conflicting nature of other synapomorphies which support the monophyly of Scaphiodonichthys, Semiplotus and Cyprin- ion it would appear that this character is homoplastic. Semiplotus shares many apomorphies with Cyprinion and Scaphiodonichthys and possesses several autapomorphies (Howes, 1982). It also shares with both Scaphiodo
. Bulletin of the British Museum (Natural History) Zoology. . Fig. 15 Dorsal fins of: a. Onychostoma sima b. Scaphesthes barbatulus c. Onychostoma lini d. Scaphiodonichthys burmanicus e. Varicorhinus beso. character restricted to these two taxa. However, in view of the conflicting nature of other synapomorphies which support the monophyly of Scaphiodonichthys, Semiplotus and Cyprin- ion it would appear that this character is homoplastic. Semiplotus shares many apomorphies with Cyprinion and Scaphiodonichthys and possesses several autapomorphies (Howes, 1982). It also shares with both Scaphiodonichthys and Onychostoma a deep posttemporal fossa. It may be argued that since this character is present in all three taxa but absent in Cyprinion it has been lost in that genus. However, since it appears that Cyprinion is the plesiomorphic member. 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 Farn, Alexander E. London : Butterworths
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