Fossils from Cretaceous Exposure in Maryland/DC

[uller6]

A few years ago I went fossil hunting with a friend and collected a backpack full of bones from a late cretaceous exposure in Maryland just outside Washington, DC.  They've been in boxes since, but I'm finally getting around doing some cleaning and took these out for pictures.  The preservation isn't great, but typical for bones from this area.  All were found disarticulated on the surface. 

I suspect three are nodosaur scutes, and one may be a jaw section (or potentially something else too?). One appears to have at least 4 tooth puncture marks - two smaller holes on one side, and two much larger divots on the other side where it is broken - I suspect something large took a bit out of this.

 

I'm curious to hear people's thoughts.

 

 

[uller6]

The Wieland (1909) manuscript is what makes me think these may be Nodosaurus scutes...

 

Edited August 31 by uller6

[Fossildude19]

These don't look like bone, to me. 

They look geologic in origin.

 

Wait for other opinions, though.

[sixgill pete]

I agree with @Fossildude19

[val horn]

I don’t know what you have. The Late Cretaceous sites near dc tend to be marine while the terrestrial sites tend to be Early Cretaceous.  Nor do I see the bone in your fossils but a lot of md Cretaceous fossils are rough.  If you bring them to the dinosaur park in laurel there are a lot of folk with expertise in md Cretaceous dinosaur material.

[EMP]

The photos are a little blurry for me to tell anything, but disarticulated dinosaur bones have been found in the early Cretaceous of Maryland and I believe the late Cretaceous Severn as well, so it’s theoretically possible. I’d definitely bring them to someone at Dinosaur Park or somewhere else and have them take a look in person. If they are bone it’s possible they could be from a different kind of animal altogether, there’s plenty of croc, turtle, mosasaur, etc stuff found in the Maryland Cretaceous.