. Bulletin of the British Museum (Natural History), Geology. 254 TWO UPPER CRETACEOUS SALMONIFORM are fused with the autogenous neural arches anteriorly, the parapophyses are auto- genous, and epipleurals are present (at least in Argentina). However, in argentin- oids there are marginal vomerine teeth (central and longitudinal in Gaudryella, absent in Humbertia), the basihyal (Nelson 1970) is long and primitively toothed (short in Gaudryella, toothless in Humbertia), the premaxilla and maxilla are toothless, and there are no supramaxillae. Also, in Argentina, one of the most primitive genera,
. Bulletin of the British Museum (Natural History), Geology. 254 TWO UPPER CRETACEOUS SALMONIFORM are fused with the autogenous neural arches anteriorly, the parapophyses are auto- genous, and epipleurals are present (at least in Argentina). However, in argentin- oids there are marginal vomerine teeth (central and longitudinal in Gaudryella, absent in Humbertia), the basihyal (Nelson 1970) is long and primitively toothed (short in Gaudryella, toothless in Humbertia), the premaxilla and maxilla are toothless, and there are no supramaxillae. Also, in Argentina, one of the most primitive genera, the skeleton is cellular (Kolliker 1959 ; personal observations), and even in Bathylagus, which is advanced in having the parietals separate, no mesocoracoid, no swim-. 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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