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Trilobite - Wikipedia
Trilobite fossils are found worldwide, with thousands of known species. Because they appeared quickly in geological time, and moulted like other arthropods, trilobites serve as excellent index fossils , enabling geologists to date the age of the rocks in which they are found. 展开
Trilobites 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 展开
The study of Paleozoic trilobites in the Welsh-English borders by Niles Eldredge was fundamental in formulating and testing punctuated equilibrium as a mechanism of evolution. 展开
When trilobites are found, only the exoskeleton is preserved (often in an incomplete state) in all but a handful of locations. A few locations (Lagerstätten) preserve identifiable soft … 展开
Trilobite relatives
Trilobites belong to the Artiopoda, a group of extinct arthropods morphologically similar to trilobites, though … 展开Trilobites appear to have been primarily marine organisms, since the fossilized remains of trilobites are always found in rocks containing fossils of other salt-water animals such as … 展开
The 10 most commonly recognized trilobite orders are Agnostida, Redlichiida, Corynexochida, Lichida, Odontopleurida, Phacopida, Proetida, Asaphida, Harpetida and Ptychopariida. In 2020, an 11th order, Trinucleida, was proposed to be elevated out of the asaphid … 展开
Only 21 or so species are described from which soft body parts are preserved, so some features (e.g. the posterior antenniform cerci … 展开
CC-BY-SA 许可证中的维基百科文本 Trilobite - Geology Science
2023年7月5日 · Learn about trilobites, extinct marine arthropods with a segmented exoskeleton and compound eyes. Discover their anatomy, evolution, diversity, fossilization, and cultural significance.
Stunning trilobite fossils include soft tissues never seen before
Trilobite | Cambrian period, Extinction, Arthropod, & Facts
Introduction to Trilobites | AMNH - American Museum …
Learn about trilobites, the first dominant form of complex life on earth, and their diverse and pervasive fossil record. Explore their evolution, distribution, and significance for science and collectors.
A one-of-a-kind trilobite fossil hints at what and how …
2023年9月27日 · A high-resolution 3-D scan of a fossilized trilobite reveals what the ancient marine arthropod ate before it died: shell fragments, bits of sea urchin–like creatures and other bottom-dwellers ...
Trilobites - British Geological Survey
Learn about trilobites, the most important early animals that lived in the sea for 250 million years. Discover their anatomy, eyes, environment, extinction and fossil record from the Cambrian to the Permian Period.
How trilobites conquered prehistoric oceans - Natural …
After suddenly appearing in the Cambrian Period, trilobites diverged into thousands of species that lived throughout Earth’s oceans during the Palaeozoic Era. Discover what made trilobites some of the most successful early animals.
What were trilobites? - Oxford University Museum of …
Learn about trilobites, extinct marine arthropods with distinctive three-fold exoskeleton, from the Cambrian to the Permian period. See trilobite fossils and their features at the Museum.
Trilobite Collection: Discover Ancient Arthropods | AMNH
Learn about the evolution of trilobites, the localities where their fossils proliferate, and browse a gallery featuring thousands of specimens.