Śaṅkha (right)
Right temple (asthi-marma)
Śaṅkha — 'conch' — at the temple, over the squamous part of the temporal bone. Bilateral; Suśruta lists two śaṅkhas. Asthi-marma (bone-class) and sadyaḥ-prāṇa-hara — instantly fatal if injured, on account of the thinness of the temporal bone over the middle meningeal vasculature. This point places at the RIGHT_TEMPLE landmark of the project's coordinate system.
Point 3 of 13 in Marma Points (Suśruta-saṃhitā)
Cross-tradition overlaps
No overlapping points are registered for this point.
Sources
Suśruta-saṃhitā, Śārīrasthāna 6 (primary_canonical)
Śārīrasthāna 6.26–28 (Acharya ed.) lists the paired Śaṅkha marmas among the head points and assigns them to the asthi class with a sadyaḥ-prāṇa-hara prognosis.