. Annual report. New York State Museum; Science; Science. 44 NEW YORK STATE MUSEUIV The following detailed account of the structure of this extremely important species has been compiled chiefly from the recent papers of Traquair and Patten, cited in the above references to the literature. The head shield occupies nearly one third of the entire length of the armoring, and shows, on the upper surface, an orbital opening which is smaller and further back than in Asterolepis. The median occipital plate [text fig. lo m. occ^ has its lateral margin more perpendicular to the pos-. Fig. II Restoration
. Annual report. New York State Museum; Science; Science. 44 NEW YORK STATE MUSEUIV The following detailed account of the structure of this extremely important species has been compiled chiefly from the recent papers of Traquair and Patten, cited in the above references to the literature. The head shield occupies nearly one third of the entire length of the armoring, and shows, on the upper surface, an orbital opening which is smaller and further back than in Asterolepis. The median occipital plate [text fig. lo m. occ^ has its lateral margin more perpendicular to the pos-. Fig. II Restoration of ventral surface of same, slightly modified (After Traquair) terior one than in the last named genus ; its anterior aspect shows not merely a shallow reentering angle for the postmedian plate, but a deep semielliptical notch or excavation, on each side of which it takes part in the formation of the posterior boundary of the orbit. Consequently the post- median plate is small, entirely received in the aforesaid notch of the median occipital, and thus excluded from joining the laterals as in Pterich- thys and Asterolepis. The lateral occipitals [/. occ^ and the angular Sjxg\ do not call for any special comment, but the laterals [/] are much broader than in Asterolepis, while the extralaterals \c. /.] are verv small, narrow, and pointed in 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 New York State Museum. Albany : University of the State of New York
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectscience, bookyear1902
