奥陶纪
Also known as Ordovician Period, Ordovician System
古生代的第二个纪
AI overview
The Ordovician is a geologic period that occurred roughly 485 to 444 million years ago, making it the second major division of the Paleozoic Era. It matters because it represents a significant chapter in Earth's history when the planet's geology and life forms were evolving in important ways between the Cambrian and Silurian periods.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Geologic timespan.name
- Ordovician
- Geologic timespan.color
- Ordovician
- Geologic timespan.image_map
- Mollweide Paleographic Map of Earth, 465 Ma (Darriwilian Age).png
- Geologic timespan.caption_map
- A map of Earth as it appeared 465 million years ago during the Middle Ordovician Epoch
- Geologic timespan.timeline
- Ordovician
- Geologic timespan.name_formality
- Formal
- Geologic timespan.name_accept_date
- 1960
- Geologic timespan.celestial_body
- earth
- Geologic timespan.usage
- Global (ICS)
- Geologic timespan.timescales_used
- ICS Time Scale
- Geologic timespan.chrono_unit
- Period
- Geologic timespan.strat_unit
Article · 中文
奥陶纪（英語：Ordovician，發音： /ɔːrdəˈvɪʃən/，符号O）是地质时代中显生宙古生代的第二个纪，约开始于4.85亿年前，结束于4.43亿年前。
Abstract from DBpedia / Wikipedia · CC BY-SA
Gallery (36)
On the map
6 mapped locations