. 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 1800. Blake (Ship); Marine animals -- Atlantic Ocean; Marine sediments; Ocean. _^^ Fig. 367. — spatangoides. important bearing as indicating the spe- cies which are likely hereafter to be pre- served as fossils, and shows us how diffi- cult it may become, even when we have such an abundant and characteristic echi- nid fauna as that of the We
. 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 1800. Blake (Ship); Marine animals -- Atlantic Ocean; Marine sediments; Ocean. _^^ Fig. 367. — spatangoides. important bearing as indicating the spe- cies which are likely hereafter to be pre- served as fossils, and shows us how diffi- cult it may become, even when we have such an abundant and characteristic echi- nid fauna as that of the West Indies, to reconstruct it from the future fossils. We may also notice that the genera of which we so frequently find the dead tests are the same which have been known as characteristic of the West Indies since the earliest tertiary. We cannot expect to find represented among the fossils the Echinothurise, Pourtalesise, and many of the Echinidie, since after death they read- ily fall to pieces, and may then be dis- solved, like many species of moUusks, at great depth, before they become protected by a covering of deep-sea 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 Houghton, Mifflin
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License: Licensed
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectocean, bookyear1888
