. Bulletin of the British Museum (Natural History), Geology. THE HEAD OF DIPTERUS VALENCIENNESI quarry than that of Banniskirk. The authors of this memoir have however, since discovered that similar remains are extensively . . spread over the Caithness deposit, etc. etc. . ." This refers to Old Red fishes in general, but clearly puts to question the origin of the specimens they figured, which are from the" more perfect remains" sent to Valenciennes & Pentland. But even more important is the lack of substance in the supposition that the Banniskirk forms have a special pattern
. Bulletin of the British Museum (Natural History), Geology. THE HEAD OF DIPTERUS VALENCIENNESI quarry than that of Banniskirk. The authors of this memoir have however, since discovered that similar remains are extensively . . spread over the Caithness deposit, etc. etc. . ." This refers to Old Red fishes in general, but clearly puts to question the origin of the specimens they figured, which are from the" more perfect remains" sent to Valenciennes & Pentland. But even more important is the lack of substance in the supposition that the Banniskirk forms have a special pattern of their head plates, qualifying them for specific recognition. None of Sedgwick & Murchison's figured specimens shows the head-pattern clearly, and so are irrelevant to this point, whether they come from Banniskirk or not. All the five specimens from Banniskirk figured by WestoU (1949 :. 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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