Anew age? Not really, but this sequel does feel like a rung up on the evolutionary ladder from 2013’s The Croods. It delivers more of the same Flintstones-meets-Ice Age family animation, with just as much headachy slapstick action. But what it’s got over the original is the addition to the voice cast of Peter Dinklage and Leslie Mann, playing husband and wife cave-couple Phil and Hope Betterman...