Were dinosaurs venomous?

Some of the dinosaurs were able to deliver venom. It appears from fossil teeth and jaws of the dinosaurs that some dinosaurs had small venomous compys. In  Jurassic Park (If read/seen), you’ll remember the venom-spraying dinosaurs and small venomous compys. Now there are spitting cobras and snakes as well as gila monsters and beaded lizards with venom.