Word: mollusks
(lookup in dictionary)
(lookup stats)
Dates: during 1940-1949
Sort By: most recent first
(reverse)
...Chalk Age of 100,000,000 years ago, when the dinosaurs reached their lurid climax before extinction, there lived in the sea shallows a big mollusk, Inoceramus, with a shell width up to four feet. Inoceramus was not much different from modern oysters, made pearls the same way-surrounding a foreign irritant inside its shell with concentric layers of the calcium-carbon-oxygen compound called nacre...