Final answer:
The indentation inferiorolateral to the auricular surface is the mandibular fossa; it is a part of the temporomandibular joint and is positioned in front of the external acoustic meatus.
Step-by-step explanation:
The question pertains to the identification of a bony landmark that is located inferiorolateral to the auricular surface. Based on the information provided and the anatomical descriptions of the temporal bone's landmarks, the mandibular fossa is identified as the indentation that is inferiorolateral to the auricular surface.
The mandibular fossa is a deep, oval-shaped depression on the external base of the skull that is situated just in front of the external acoustic meatus, and it is part of the temporomandibular joint where it articulates with the mandible. The options provided were A) Mastoid notch, B) Mandibular fossa, C) External acoustic meatus, and D) Styloid process; therefore, the correct answer is B) Mandibular fossa.
This indentation allows for the movements of the mandible during the opening and closing of the mouth.