| Annularia Temporal range:
| |
|---|---|
| |
| Annularia stellata | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Division: | Polypodiophyta |
| Class: | Polypodiopsida |
| Subclass: | Equisetidae |
| Order: | Equisetales |
| Family: | †Calamitaceae |
| Genus: | †Annularia Sternberg (1821) |
Annularia is a form taxon, applied to fossil foliage belonging to extinct plants of the genus Calamites in the order Equisetales.