This has been tagged and coined Darwin's tubercle of the auricle.

Darwin's tubercle is a congenital ear condition which often presents as a thickening on the helix at the junction of the upper and middle thirds.

Darwin's tubercle, is a minor malformation of the junction of the fourth and fifth hillocks of Hiss.

(see Darwin's tubercle)

The gene for Darwin's tubercle is inherited in an autosomal dominant pattern, and has incomplete penetrance, meaning that those who possess the gene will not necessarily present with the phenotype.

The outer structure of the ear also shows some vestigial features, such as the node or point on the helix of the ear known as Darwin's tubercle which is found in around 10% of the population.