For example , the aye - aye has a formula of 1.0. 1.31.0. 0.3 , demonstrating the need for both upper and lower quadrant counts .
In extant placental mammals , the maximum dental formula is : 3.1. 4.33.1. 4.3 Mammal teeth are usually symmetrical , but not always .
The aye - aye has a formula of 1.0. 1.31.0. 0.3 , demonstrating the need for both upper and lower quadrant counts .
In extant placental mammals , the maximum dental formula is : 3.1. 4.33.1. 4.3 Mammal teeth are usually symmetrical , but not always .