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Livros Livros 1 - 5 de 5 sobre Echinoderms, and the latter is seen in its full development in the adult Rotifera,....
" Echinoderms, and the latter is seen in its full development in the adult Rotifera, and in the larval Gasteropoda and Pteropoda. The identity of the velum of larval Gasteropods, with the ciliated disks of Rotifera, seems to admit of little doubt, and it... "
Quarterly Journal of Microscopical Science - Página 355
1874
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The American Naturalist, Volume 9

1875
...Gasteropoda and Pteropoda. The identity of the velum of larval Gasteropods, with the ciliated disks of Rotifera, seems to admit of little doubt, and it...provided with a polar tuft of long cilia. "The cell, polyblast (inorula), gastrula, trochosphere, and veliger phases of molluscan development are not distinctive...
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the american naturalist

a. s. packard, jr.\ f. w. putnam\ r. h. ward - 1875
...Gasteropoda and Pteropoda. The identity of the velum of larval Gasteropods, with the ciliated disks of Rotifera, seems to admit of little doubt, and it...Chiton) provided with a polar tuft of long cilia. distinctively molluscan — the last characteristic of the higher MolInsca only — the other two of...
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the american naturalist

a. s. packard, jr.\ f. w. putnam\ r. h. ward - 1875
...Gasteropoda and Pteropoda. The identity of the velum of larval Gasteropods, with the ciliated disks of Rotifera, seems to admit of little doubt, and it...Chiton) provided with a polar tuft of long cilia. distinctively molluscan — the last characteristic of the higher Mollusca only — the other two of...
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LIFE HISTORIES OF ANIMALS,INCLUDING MAN OR OUTLINES OF COMPARATIVE EMBRYOLOGY

A.S. PACKARD,JR - 1876
...Gasteropoda and Pteropoda. The identity of the velum of larval Gasteropods, with the ciliated disks of Rotifera, seems to admit of little doubt, and it...provided with a polar tuft of long cilia. "The cell, polyblast (morula), gastrula, trochosphere, and veliger phases of molluscan development are not distinctive...
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Life Histories of Animals, Including Man: Or, Outlines of Comparative Embryology

Alpheus Spring Packard - 1876 - 243 páginas
...Gasteropoda and Ptcropoda. The identity of the velum of larval Gasteropods, with the ciliated disks of Rotifera, seems to admit of little doubt, and it would be well to have one term, e, g., velum, by which to describe both. The Trochosphere is the earlier, more or less spherical form...
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