Trilobite
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High Quality Content by WIKIPEDIA articles! Trilobites (pronounced tra?l??ba?t, meaning "three lobes") are a well-known fossil group of extinct marine arthropods that form the class Trilobita. Trilobites first appear in the fossil record during the Early Cambrian period (540 million years ago) and flourished throughout the lower Paleozoic era before beginning a drawn-out decline to extinction when, during the Devonian, all trilobite orders, with the sole exception of Proetida, died out. Trilobites finally disappeared in the mass extinction at the end of the Permian about 250 million years ago. When trilobites first appear 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, with some 17,000 known species spanning Paleozoic time. Trilobites have provided 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.
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- Allgemeine Informationen
- Titel Trilobite
- Format Kartonierter Einband
- EAN 9786130416171
- Herausgeber Betascript Publishing
- Anzahl Seiten 108
- Editor Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
- Genre Geschichte
- GTIN 09786130416171
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