Calamites plant from the Carboniferous period. Calamites began in the Devonian and became trees during the Carboniferous Period and exist today as horsetail plants.
Crédito: Album / Stocktrek Images / Corey Ford
Tamaño imagen: 3400 × 5100 px | 49.6 MB
Tamaño impresión: 28.8 × 43.2 cm | 1338.6 × 2007.9 in (300 dpi)