Any one of numerous species of extinct arthropods belonging to the order Trilobita. Trilobites were very common in the Silurian and Devonian periods, but became extinct at the close of the Paleozoic. So named from the three lobes usually seen on each segment.
Word of the Day: Catachrestical
Trilobites
Encyclopedia Britannica
TRILOBITES. See Crustacea, vol. vi. p. 659 sq.
9th ed. Encyclopædia Britannica, vol. 23, p. 573
[8 words — estimated reading time: 1 minute]
[8 words — estimated reading time: 1 minute]
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