Calamitaceae
（重定向自Calamitales）
![](/Images/godic/202501/02/Annularia_Stellata3931.jpg")
![Asterophyllites equisetiformis](/Images/godic/202501/02/Asterophyllites_Equisetiformis3931.jpg")
![Calamites](/Images/godic/202501/02/Calamites_sp.1_-_Carbonifero3932.JPG")
Calamitaceae is an extinct family of plants related to the modern horsetails. Some members of this family attained tree-like stature during the Carboniferous Period (around 360 to 300 million years ago). The family takes its name from its principal genus Calamites.