Supraglottis includes all of the following except:
The lingual surface of epiglottis and vallecula are a pa of oropharynx - Logan Turner Whole of epiglottis is included in supraglottic area. - Dhingra 6th/ed , Scott-Brown's 7th/ed
Aryepiglottic fold
False cord
Lingual surface of epiglottis
Laryngeal surface of epiglottis