| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 1,506,877,822 visitors served. |
|
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
Carboniferous |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.03 sec. |
|
Carboniferous of, denoting, or formed in the fifth period of the Palaeozoic era, between the Devonian and Permian periods, lasting for nearly 64 million years during which coal measures were formed How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
|
| ? Mentioned in | ? References in periodicals archive | |
|---|---|---|
The earliest known records of amphibians, the first land vertebrates, date to 360 million years ago, but it is not until the Upper Carboniferous, 50 million years later, that the fossil record becomes plentiful. |
| Encyclopedia |
| Free Tools: |
For surfers:
Browser extension |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|