What does trilobite mean?

Definitions for trilobite
ˈtraɪ ləˌbaɪttrilo·bite

This dictionary definitions page includes all the possible meanings, example usage and translations of the word trilobite.

Princeton's WordNet

  1. trilobitenoun

    an extinct arthropod that was abundant in Paleozoic times; had an exoskeleton divided into three parts

Wiktionary

  1. trilobitenoun

    An extinct arthropod of the class Trilobita, whose body had three large lobes.

  2. Etymology: tri- 'three' + lobe + -ite

Wikipedia

  1. Trilobite

    Trilobites (; meaning "three lobes") are extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the Atdabanian stage of the Early Cambrian period (521 million years ago) and they flourished throughout the lower Paleozoic before slipping into a long decline, when, during the Devonian, all trilobite orders except the Proetida died out. The last extant trilobites finally disappeared in the mass extinction at the end of the Permian about 252 million years ago. Trilobites were among the most successful of all early animals, existing in oceans for almost 270 million years, with over 22,000 species having been described. By the time trilobites first appeared in the fossil record, they were already highly diversified and geographically dispersed. Because trilobites had wide diversity and an easily fossilized exoskeleton, they left an extensive fossil record. The study of their fossils has facilitated important contributions to biostratigraphy, paleontology, evolutionary biology, and plate tectonics. Trilobites are often placed within the arthropod subphylum Schizoramia within the superclass Arachnomorpha (equivalent to the Arachnata), although several alternative taxonomies are found in the literature. More recently they have been placed within the Artiopoda, which includes many organisms that are morphologically similar to trilobites, but are largely unmineralised. Trilobites evolved into many ecological niches; some moved over the seabed as predators, scavengers, or filter feeders, and some swam, feeding on plankton. Some even crawled onto land. Most lifestyles expected of modern marine arthropods are seen in trilobites, with the possible exception of parasitism (where scientific debate continues). Some trilobites (particularly the family Olenidae) are even thought to have evolved a symbiotic relationship with sulfur-eating bacteria from which they derived food. The largest trilobites were more than 45 centimetres (18 in) long and may have weighed as much as 4.5 kilograms (9.9 lb).

ChatGPT

  1. trilobite

    A trilobite is a prehistoric marine arthropod that existed between 521 and 251 million years ago, during the Paleozoic era. These creatures were one of the earliest known groups of arthropods and their fossils are found worldwide. Trilobites are notable for their segmented bodies which are divided into three distinct horizontal lobes, thus the name trilobite, meaning 'three lobes'. Their sizes ranged from a millimeter to over 70 centimeters in length. Despite their extinction, trilobites remain a focal point of interest for paleontologists and fossil collectors.

Webster Dictionary

  1. Trilobitenoun

    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

Wikidata

  1. Trilobite

    Trilobites are a well-known fossil group of extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the Atdabanian stage of the Early Cambrian period, and they flourished throughout the lower Paleozoic era before beginning a drawn-out decline to extinction when, during the Devonian, all trilobite orders except Proetida died out. Trilobites finally disappeared in the mass extinction at the end of the Permian about 250 million years ago. The trilobites were among the most successful of all early animals, roaming the oceans for over 270 million years. When trilobites first appeared in the fossil record they were already highly diverse and geographically dispersed. Because trilobites had wide diversity and an easily fossilized exoskeleton an extensive fossil record was left behind, with some 17,000 known species spanning Paleozoic time. The study of these fossils has facilitated important contributions to biostratigraphy, paleontology, evolutionary biology and plate tectonics. Trilobites are often placed within the arthropod subphylum Schizoramia within the superclass Arachnomorpha, although several alternative taxonomies are found in the literature.

Chambers 20th Century Dictionary

  1. Trilobite

    trī′lō-bīt, n. one of an order of fossil crustacea entirely confined to the Paleozoic rocks.—adj. Trilobit′ic.

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Numerology

  1. Chaldean Numerology

    The numerical value of trilobite in Chaldean Numerology is: 2

  2. Pythagorean Numerology

    The numerical value of trilobite in Pythagorean Numerology is: 2

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"trilobite." Definitions.net. STANDS4 LLC, 2024. Web. 19 Mar. 2024. <https://www.definitions.net/definition/trilobite>.

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