What is the course of inter auricular line? **BACKGROUND:** The interauricular line is the line connecting two auricles. * * * I wish to know the exact route through which this line passes. I want to be sure whether it passes through the parietal prominences, or in front of them.

Up front - I have never heard of this term and I could not find information on the interauricular line. The only thing I was able to dig up was the term **_auricular line_** , which is (Fig. 1):

> [The] [l]ine pass[ing] perpendicular to the anthropological baseline, through the cent[er] of the external auditory meatus.

![auricular line](
Fig. 1. Auricular line. source: Radiology Key

The _anthropological line_ being (Fig. 2):

> [The] [l]ine join[ing] the infraorbital margin to the superior border of the external auditory meatus.

![anthropological line](
Fig. 2. Anthropological line. source: Radiology Key