Final answer:
Fibrous joints joined only by ligaments are classified as syndesmoses, allowing for a greater degree of movement and found between bones of the forearm and leg.
Step-by-step explanation:
The type of fibrous joints found articulating bones joined only by ligaments is known as syndesmoses. These joints are characterized by bones that are more widely separated but connected by a narrow band of fibrous connective tissue called a ligament, or a wide sheet of connective tissue known as an interosseous membrane. Syndesmoses offer a greater degree of movement compared to other types of fibrous joints, and are found between the bones of the forearm (radius and ulna) and between the bones of the leg (tibia and fibula).