And nary a fucking ark to be seen....

[Anomalocaris]

By definition if the earliest dinosaurs had feathers then, at that point in time, ALL dinosaurs had feathers and evolved from there.

Not quite true. To my knowledge all feathered dinosaurs are ceolosuarian, meaning that they are descendants of one small Triassic dinosaur. Ceolosuarian cover a large range of theropods that eat either meat or plants. We do known however that this does not cover all dinosaurs as all ceolosuarian are orithosrithian ( forgive my spelling) and there are still saurischians as well. As well we have carnosaurs which are a whole other lineage of animals.

You have it backwards. Birds and theropods are saurischians, not ornithischians, despite the name. Ornithischians have a hip structure superficially similar to birds, but they are otherwise much less similar to birds than saurischians.