. Devonian fishes of Iowa. Fishes, Fossil; Paleontology; Paleontology. DEVONIAN FISHES OF IOWA 203. £0 MO EO Fig. 30. Fig. 30. Protitanichthys fossatus Eastm. Delaware limestone (Ulsterian); Delaware, Ohio. Restoration of headshield showing transversely elongated pineal and rostral plates, and sinuous suture-line between the centrals. Letteringasin preceding figures, x i. Holo- type in Museum Comparative Zoology. the very conspicuous pineal foramen, placed slightly behind the middle of the plate it pierces. Two other prominent fossae, corresponding to those in Dinichthys, occur in line with th
. Devonian fishes of Iowa. Fishes, Fossil; Paleontology; Paleontology. DEVONIAN FISHES OF IOWA 203. £0 MO EO Fig. 30. Fig. 30. Protitanichthys fossatus Eastm. Delaware limestone (Ulsterian); Delaware, Ohio. Restoration of headshield showing transversely elongated pineal and rostral plates, and sinuous suture-line between the centrals. Letteringasin preceding figures, x i. Holo- type in Museum Comparative Zoology. the very conspicuous pineal foramen, placed slightly behind the middle of the plate it pierces. Two other prominent fossae, corresponding to those in Dinichthys, occur in line with the pineal on the visceral side of the preorbitals, and these appear to have been bounded by a low transverse ridge in front. The assumption does not appear to be unreasonable that these fossae served to receive the bases of vomerine teeth. Formation and locality. Delaware limestone (Ulsterian); Delaware, Ohio. Holotype preserved in the Museum of Com- parative Zoology, Cambridge. Genus TITAMCHTHYS Newberry. Plates of head and trunk resembling those of Dinichthys, but relatively thinner, and more laterally expanded. Pineal plate elliptical, broader than long, in contact with the centrals, and pierced by one or two foramina, the latter sometimes capped by a small bony operculum. Lower dental plates long and slen- der, without denticulations, grooved in the anterior portion of. 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 Eastman, Charles Rochester, 1868-1918; Iowa Geological Survey. Des Moines : Iowa Geological Survey
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