Definition of trilobite
: any of numerous extinct Paleozoic marine arthropods (group Trilobita) having the segments of the body divided by furrows on the dorsal surface into three lobes
Recent Examples of trilobite from the Web
A Clovis Paleo Indian point and an Isotelus trilobite signify the rare geological artifacts that can be found in the area.
From above, Palm Jumeirah resembles a palm tree with spreading branches, or maybe a trilobite fossil.
Called enterococci, these hardy bacteria have endured several mass extinctions, including the Permian catastrophe of about 252 million years ago that destroyed nearly all species, including the trilobites.
There are more than 20,000 species of trilobite previously identified, Donahue reports.
The ancient soft parts are offering new insights into the behavior of trilobites, the insect-like creatures that ruled Earth’s early seas for hundreds of millions of years.
Behold the hyolith — a bizarre Cambrian-period creature that dwelt on the ocean floor alongside other armored invertebrates like trilobites more than 500 million years ago.
That’s right—all of the beetles that look like trilobites are females.
Ancient creatures such as trilobites and brachiopods could not cope with the changes, and many of them went extinct.
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Origin and Etymology of trilobite
ultimately from Greek trilobos three-lobed, from tri- + lobos lobe
First Known Use: 1832See Words from the same year
Learn More about trilobite
Britannica.com: Encyclopedia article about trilobite
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