trilobite


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

trilobite

a fossil arthropod of the class Trilobita from the CAMBRIAN and SILURIAN PERIODS.
References in periodicals archive ?
A trilobite is the ancestor of spiders and crabs but is mostly related to modern-day horseshoe crabs.
The trilobite shape is far from being the most suitable for churches to face the earthquakes.
Although Monomorphichnus is most often attributed to a trilobite tracemaker, and are frequently preserved in deeper marine environments, the trace has also been described from shallow marine, fluvial and estuarine environments (Fillion and Pickerill 1990).
Ordovician Trilobites of Southern Ontario, Canada and the Surrounding Region
Another shot shows the interior of an ad hoc exhibition room, where a complete-looking T-rex skeleton stands out as the largest piece in a collection that also includes plenty of trilobites -- those multilegged sea-going critters that first appeared some 520 million years ago.
Probably, the stronger role was played by the taphonomic filter, as preservation of trilobite trace fossils is highest in heterolithic siltstone-sandstone deposits (Crimes, 1975; Goldring, 1985).
Michael Rutana of Ohio State University studied eight trilobite fossils.
Just off the interstate in Tully, there's a bald hillside that can be scavanged for spirifers, rippled Grammysia bivalves and the odd trilobite.
Electrolux's history in vacuums has been a parade of innovations: Model the first vacuum cleaner on runners, launched in 1921; the Luxomatic Z90 in 1964, the first model with a cord winder, self-sealing paper dust bags and a dust indicator; and the Trilobite in 2001, the first mass-produced, self-propelled vacuum.
Richard Fortey, a paleontologist who specialized in trilobites (a group of extinct arthropods) at the Natural History Museum in London, is the award-winning author of Life: A Natural History of the First Four Billion Years of Life on Earth (1997), Trilobite: Eyewitness to Evolution (2000), The Hidden Landscape: A Journey into the Geological Past (1993), Earth: An Intimate History ([EXCELLENT] Mar/Apr 2005), and Dry Storeroom No.
He was the brains behind the first commercially available robotic vacuum cleaner, the Electrolux Trilobite.