>>212299763
Have the dinosaurs escape from a Jurassic Park needlessly built close to a major urban city and spend the rest of the film following a family seeking shelter from the huge lizards now prowling through the streets in search of humans to eat. Basically make the city sequence from The Lost World into a full-length motion picture. There's plenty of room for set-pieces juxtaposing suburban / urban backdrops with the primeval.
https://www.youtube.com/watch?v=namKsaP4hcc