The oldest human remains found are 20000 years old, they are relitively the same size. When find dinosaur bone which are far far older than humans
Rasulullah (Sallallaahu Alayhi Wasallam) said that ‘Aadam (Alayhis salaam) was 30 Ziraa tall.’
Ziraa is a measurement and one Ziraa is approximately half metre. The Hadith is authentic and that is siffucient for us. Scientific and archeological evidences are subordinate to Hadith.
and Allah Ta’ala Knows Best
Mufti Ebrahim Desai