. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. CHARACTERISTIC DEEP-SEA TYPES. CRUSTACEA. 51 uncommon West Indian type from the globigerina ooze: it be- longs to the group having no peduncle. As has been noticed by Hoek, the presence of Scalpellum and Verruca in the great depths of the ocean coincides in a strik- ing manner with the palreontological history of these genera. They are found in the secondary deposits, yet the genus Pol- licipes, another of the pedunculated cirripeds, dating back to the oolite, is only a littoral genus in our seas. The ostraco
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. CHARACTERISTIC DEEP-SEA TYPES. CRUSTACEA. 51 uncommon West Indian type from the globigerina ooze: it be- longs to the group having no peduncle. As has been noticed by Hoek, the presence of Scalpellum and Verruca in the great depths of the ocean coincides in a strik- ing manner with the palreontological history of these genera. They are found in the secondary deposits, yet the genus Pol- licipes, another of the pedunculated cirripeds, dating back to the oolite, is only a littoral genus in our seas. The ostracods are minute crustaceans, the dead tests of which occur in nearly all the bottom deposits. They are very abundant fossils, but the deep-sea dredgings have not as yet revealed any type of im- portance. Many of the ostracods (Fig. 259) are pelagic; only a compara- tively small num- â . ' Fig. 2o9.âCypns. Greatly magnified. ber live at any considerable depth ; they are denizens of shallow water or of moderate 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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