<searching memory> I don't believe I have ever seen a dinosaur fossil in
the ground in which a gar fish dermal plate, or a turtle fragment, or a
croc scute was *not* also found nearby.
Since water plays a big role in depositing nearly all terrestrial fossils-to-be (aeolian deposition being the exception), then the association of croc fossils and fish fossils with dinosaur bones has no particular significance.
<pb>
Peter M