FIGURE 4. Occlusal view of upper third molars (M3) representing the different morphotypes observed in the Fiene Arvicolini sample. Right M3 (VP-15778) (1). Right M3 (VP-15790) (2). Right M3 (VP-15781) (3). Right M3 (VP-15784) (4). Right M3 (VP-15804) (5). Right M3 (VP-15820) (6). Right M3 (VP-1508) (7).