Surya Namaskar
The specific sequence was named and popularised in a single 1928 book by an Indian ruler, who himself stated plainly that it drew on an existing regional folk custom rather than any ancient yogic scripture. No medieval yoga text describes this sequence at all.
Bhawanrao Pant Pratinidhi, The Ten-Point Way to Health: Surya Namaskars (1928)
The 'sun salutation' sequence of postures, now a near-universal opening routine in yoga classes worldwide, presented as ancient Vedic sun worship.