. A contribution to American thalassography : Three cruises of the United States Coast and geodetic survey steamer "Blake", in the gulf of Mexico, in the Caribbean sea, and along the Atlantic coast of the United States, from 1877 to 1880. Blake (Steamer); Marine animals -- Atlantic Ocean; Marine sediments. Fig. 404.—Metacrinus angulatus. -|. (Carpenter.) ferences existing' between the liassic and the modern PentacrinidaB led the Austins to establish the genus Extracrinus for a fossil species which seems to have been gregarious, and of which Queenstedt has figured a magnificent slab,
. A contribution to American thalassography : Three cruises of the United States Coast and geodetic survey steamer "Blake", in the gulf of Mexico, in the Caribbean sea, and along the Atlantic coast of the United States, from 1877 to 1880. Blake (Steamer); Marine animals -- Atlantic Ocean; Marine sediments. Fig. 404.—Metacrinus angulatus. -|. (Carpenter.) ferences existing' between the liassic and the modern PentacrinidaB led the Austins to establish the genus Extracrinus for a fossil species which seems to have been gregarious, and of which Queenstedt has figured a magnificent slab, some of the specimens with a stem nearly sixty feet long. The stems were often twisted into a solid, ropelike mass, and are so entan- gled on the slab that it is difficult to make out the individual stems. A sim- ilar entangling also occurred among the specimens dredged by the " Blake," and it was often very difficult to separate speci-. Fig. 406. — Pentacrinus stage of Actinometra mericlionalis, magni- 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 Agassiz, Alexander, 1835-1910; U. S. Coast and Geodetic Survey. Boston ; New York : Houghton, Mifflin and Co.
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Keywords: ., bookauthoruscoasta, bookcentury1800, bookdecade1880, bookyear1888
