. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Figure 5. Frimaspis priinordialis (Barrande), Middle Ordovician, DraboT quartzites, d5, Bohemia. A, B. C, cranidiuni, anterior, right lateral, and dorsal views respectively, X 3. D, pygidium, dorsal view, X 3. Based on MCZ 4139, Drabov. greatly inflated or lengthened, bearing median tubercle or paired spines, small occipital lobes. Eye lobe far back and at about half width of cheek. Lateral border spines short, librigenal spine broad at base. Thorax of ten segments, posterior pleural band inflated at fulcrum and conti
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Figure 5. Frimaspis priinordialis (Barrande), Middle Ordovician, DraboT quartzites, d5, Bohemia. A, B. C, cranidiuni, anterior, right lateral, and dorsal views respectively, X 3. D, pygidium, dorsal view, X 3. Based on MCZ 4139, Drabov. greatly inflated or lengthened, bearing median tubercle or paired spines, small occipital lobes. Eye lobe far back and at about half width of cheek. Lateral border spines short, librigenal spine broad at base. Thorax of ten segments, posterior pleural band inflated at fulcrum and continued into stout posterior pleural spine; anterior pleural spine 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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