Annularia
| 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.