Celmus | |
---|---|
Scientific classification | |
Kingdom: | |
Phylum: | |
Class: | |
Order: | |
Genus: | Celmus
|
Celmus is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the later part of the Arenig stage of the Ordovician Period,[1] approximately 471 to 478 million years ago.