I didn't find any implicit Verse showing us who were on earth before Adam.
I think according to this verse [2:30]
And [mention, O Muhammad], when your Lord said to the angels, "Indeed, I will make upon the earth a successive authority." They said, "Will You place upon it one who causes corruption therein and sheds blood, while we declare Your praise and sanctify You?" Allah said, "Indeed, I know that which you do not know."
Allah showing us(in explicit way) that there were creatures living on earth that have blood.
Do we have any Hadith or another verse showing us who were living on earth before Adam?