. Zoology : for students and general readers . Zoology. Fig. 68.—A Blaptoid, Fentremiies, seen from tlie Bide and from above.—After LUtkeu. There are two species of Antedon on the New England coast, one {A. Sarsii) inhabiting deep water in about one hundred fathoms, and the other {A. Eschrichtii MuUer) shallower water (twenty-five fathoms) in the Gulf of Maine. Order 3. Blastoidea.—Wo forms have been discovered later than the Carboniferous period. The group began its existence as species of Pentremites (Fig. 68) in the Upper Silurian, and culminated in the Carboniferous age. It connects the Cr
. Zoology : for students and general readers . Zoology. Fig. 68.—A Blaptoid, Fentremiies, seen from tlie Bide and from above.—After LUtkeu. There are two species of Antedon on the New England coast, one {A. Sarsii) inhabiting deep water in about one hundred fathoms, and the other {A. Eschrichtii MuUer) shallower water (twenty-five fathoms) in the Gulf of Maine. Order 3. Blastoidea.—Wo forms have been discovered later than the Carboniferous period. The group began its existence as species of Pentremites (Fig. 68) in the Upper Silurian, and culminated in the Carboniferous age. It connects the Crinoids with the Cystideans ; the species have no arms, are supported on a short, jointed stalk, and the oral plates, when closed, as they are in a fossil state, make the calyx look like a flower-bud. There is a mouth and eccentric anal outlet and five radiating grooves, along. 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 Packard, A. S. (Alpheus Spring), 1839-1905. New York : Henry Holt
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1879
