For Sandbox, I don't just want immortal dinosaurs but also unchanging dinosaur families. You make a dinosaur family and it remains the same for eternity like The Simpsons.
These two links explain it all:
en.m.wikipedia.org
tvtropes.org
These two links explain it all:
Floating timeline - Wikipedia
Not Allowed to Grow Up - TV Tropes
AKA "perpetual childhood". An old (and in live-action, discredited) trope which was implicit in many early sitcoms that focused on the standard American Nuclear Family of father, mother, and 2.6 children â the situation …
tvtropes.org