They existed, few or many, as early as any other of the mollusca.
"The Christian Foundation, Or, Scientific and Religious Journal, Volume I, No. 7, July, 1880" by Various
LIME, effect of, upon shells of the mollusca, ii.
"The Variation of Animals and Plants Under Domestication, Volume II (of 2)" by Charles Darwin
In variety, in this connexion, the Mollusca must perhaps be given the first place.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 1" by Various
Such beds exist; there is, however, not a trace in any of them of any American mollusca.
"The History of the European Fauna" by R. F. Scharff
No structure comparable to this siphuncular pedicle is known in any other Mollusca.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6" by Various
His attention was given not only to geology but to zoology, and especially to the land-mollusca and to the vertebrates.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1" by Various
These animals have not an internal skeleton, like the vertebrata; nor are they wholly destitute of a skeleton, as are the mollusca.
"Illustrative Anecdotes of the Animal Kingdom" by Samuel Griswold Goodrich
Some of them have feet, as the mollusca.
"Lives of Eminent Zoologists, from Aristotle to Linnæus" by William MacGillivray
What various methods of locomotion are found among mollusca?
"A Guide for the Study of Animals" by Worrallo Whitney
This animal is a genus of the mollusca tribe, which glitters in the night on the crest of every bursting wave.
"The South-West" by Joseph Holt Ingraham