Near Palo is the modern sea-bathing resort Ladispoli, founded by Prince Odescalchi.
The connecting link with Hyracotherium was formed by Pachynolophus (Pro palaeotherium), and the line apparently terminated in Palo plotherium, which is also Oligocene.
Palo Alto was laid out in 1891, but had no real existence before 1893.
Palo Alto suffered severely in the earthquake of 1906.
Among other forest trees of economic importance are the silk-cotton tree (Bombax ceiba), the Palo de vaca, or cow-tree (Brosimum galactodendron), whose sap resembles milk and is used for that purpose, the Inga saman, the Hevea guayanensis, celebrated in the production of rubber, and the Altalea speciosa, distinguished for the length of its leaves.