Are these dinosaur bones?

[Justin Harris]

[ziggycardon]

You will need to give some more information if you want to get a proper ID.  
Like where were these bones found? What is the geological age of the location where these fossils are found. 
But honestly they look quite recent in my opinion, Pleistocene or Holocene most likely.

[Troodon]

Not dinosaurian but like ziggycardon said need locality of find.

[Fossildude19]

Also, size of each item, and more views of each bone from different angles.

[caldigger]

The one on the far right looks like it has been sawn on the ends.

[Auspex]

5 minutes ago, caldigger said:

The one on the far right looks like it has been sawn on the ends.

The one left of it has been sawn, also. Strong evidence of modern butchery.

[Bone Daddy]

Welcome to the Fossil Forum.

 

I see in you are located in Miami.

 

If these were found in Florida, then they are not dinosaur. No dinosaurs in Florida.

 

 

[Justin Harris]

They were definitely  cut. I found them in a junk pile outside of a house in the panhandle that had been gutted due to storm damage. They had a few antiques so I thought they may have had these for some reason. They are  big like a cow or something

[Justin Harris]

[Justin Harris]

Maybe a wooly mammoth knee bone?

[Kane]

4 minutes ago, Justin Harris said:

Maybe a wooly mammoth knee bone?

If it were a patella, it would be much more rounded. For comparison, an elephant patella:

 

[Auspex]

These bones are modern era: they were cut with a steel bone saw.

 

Now, identifying them is done with straight-on views from all 6 directions, with precise measurements.

Here is what I see for the largest one:

 

[LordTrilobite]

As Auspex pointed out, that first bone is definitely a partial humerus. Does indeed look like cow.

[Osteobyte]

Yup, cow humerus, distal femur, and radius shaft. Sawn bones for the pot, or dog!