AI overview
Trilobites are extinct marine arthropods that lived in Earth's oceans for nearly 270 million years and are among the earliest and most successful arthropod groups in the fossil record, with over 22,000 species identified. They matter scientifically because their hard, calcite exoskeletons fossilized well and left an extensive fossil record that has made them invaluable for studying biostratigraphy, paleontology, and evolutionary biology.
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Wikidata facts
- Image
- Koneprusia brutoni.jpg
Show 4 more facts
- taxon name
- Trilobita
- Commons category
- Trilobita
- start time
- 521000000-
- end time
- 251900000-
Article · 中文
三叶虫纲（學名：Trilobita）的动物通称三叶虫，是节肢动物门中已经灭绝的一纲。牠们最早出现于寒武紀，在古生代早期达到顶峰，此后逐渐减少至灭绝。最晚的三叶虫（砑头虫目）于二亿五千万年前二叠纪结束时的生物集群灭绝中消失。三叶虫是非常知名的化石动物，其知名度可能仅次于恐龙。在所有的化石动物中三叶虫是种类最丰富的，至今已经确定的有九（或者十）个目，一万五千多个物种。大多数三叶虫是比较简单的、小的海生动物，牠们在海底爬行，通过过滤泥沙来吸取营养。牠们身體分節，有帶溝將身體分為三個垂直的葉。在世界各地都有發現過其化石。
Abstract from DBpedia / Wikipedia · CC BY-SA