Land of the Lost (US-2009; dir. Brad Silberling), starring Will Ferrell as Park Ranger Rick Marshall. There are a couple of kids, lots of dinosaurs and other creatures, and the bad sentient lizard folk, the Sleestaks.
A forest ranger along with his two children inadvertently stumble into a mysterious land populated by dinosaurs and other creatures, including the mysterious and dangerous race of Sleestak.Here is what the Sleestaks look like in the new film:
It's due to open on 5 June 2009 in the US.