. Annual report. New York State Museum; Science; Science. SOME NEW DEVOXIC FOSSILS 163 that they are seldom seen except on casts of the ventral surface of the border and in such cases the outermost sometimes assume the aspect of a pair of subsidiary spines. The snout is axial, has a broad base, is contracted in diameter medially and at the distal extremity carries a trident the central process being axial, the other two diverging palmately and all considerably extended. There seems to be some variation in the length of this process but ap- parently it was from one third to one half as long as
. Annual report. New York State Museum; Science; Science. SOME NEW DEVOXIC FOSSILS 163 that they are seldom seen except on casts of the ventral surface of the border and in such cases the outermost sometimes assume the aspect of a pair of subsidiary spines. The snout is axial, has a broad base, is contracted in diameter medially and at the distal extremity carries a trident the central process being axial, the other two diverging palmately and all considerably extended. There seems to be some variation in the length of this process but ap- parently it was from one third to one half as long as the cephalon itself. The entire process is flat. In the trilobed species of the. v5?. 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
