The Flintstones' became primetime TV's first animated series in 1960.

The Flintstones: Complete First Season [1960] (DVD) – Warner Bros. Shop - UK

The Flintstones turn 50

Classic 1960s Christmas #22 - The Flintstones Christmas Flintstone

Yabba Dabba Do! A Brief History of “The Flintstones”

The Flintstones: Prime-Time Specials Collection Volume 1 [New DVD] Full Frame, 883316651155

The Flintstones, United Paramount Network (UPN) Wiki

New Flintstones Animated Adult Comedy TV Show In The Works

Did you like The Flintstones when you were a child? - Quora

The Flintstones (TV series), The Flintstones Wiki

The first animated series on prime time and the series marking animation shows as mainstream on prime time - Animost Studio