. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 426 Mr. II. Day on the slightly dumb-bell shaped in form—broad-based, then con- stricting, to expand again and end in what appears to be definite articulating facets. These anterior processes, which are stout flattened rod-like structures, are to be regarded as " basipterygoid" processes, and are of great interest on account of their articulating facets, the interest of which will be apparent when we come to deal with the homologies of this bone. Cast of the d
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 426 Mr. II. Day on the slightly dumb-bell shaped in form—broad-based, then con- stricting, to expand again and end in what appears to be definite articulating facets. These anterior processes, which are stout flattened rod-like structures, are to be regarded as " basipterygoid" processes, and are of great interest on account of their articulating facets, the interest of which will be apparent when we come to deal with the homologies of this bone. Cast of the dorsal surface of the compound para-basisphenoid bone of Rhadinkhthi/s monensis showing the well-defined pituitary region. (Specimen C.) X 76 diams. No. L 10822. M. M. The posterior pair of lateral processes are flat thin flanges of bone which project outwards and backwards, and possess on their surface a few indefinite ridges. This completes the account of the dorsal and ventral views of the bone, but a few remarks may be added on specimen C This is an almost complete cast of the dorsal surface of the bone, only a few small fragments of actual bony material being still adherent. The dorsal surface has already been. 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 London, Taylor and Francis, Ltd
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Keywords: ., bookce, booksubjectbotany, booksubjectgeology, booksubjectzoology
