NJ Cretaceous Croc scute

[Fishinfossil]

I think I found a pretty nice croc scute today in a NJ Cretaceous stream. Can anyone confirm?

[The Jersey Devil]

It’s a concretion with some clam borings 

[Fishinfossil]

[Fishinfossil]

 A couple more looks at it. Sorry for the crappy pics without detail. Its about a 1/8 inch thick. Those diagonal burrows in the middle reminded me of a sand dollar. @The Jersey Devil I'm fairly new with clam bores on concretions, is there a way to tell definitively their pattern or modus operandi? I found it interesting that the holes stopped completely at the one radius around the center.

 

[Jeffrey P]

I agree it doesn't look like a croc scute and appears to be some type of concretion. 

[The Jersey Devil]

16 minutes ago, Fishinfossil said:

 A couple more looks at it. Sorry for the crappy pics without detail. Its about a 1/8 inch thick. Those diagonal burrows in the middle reminded me of a sand dollar. @The Jersey Devil I'm fairly new with clam bores on concretions, is there a way to tell definitively their pattern or modus operandi? I found it interesting that the holes stopped completely at the one radius around the center.

 

I believe one thing that distinguishes the clams is the substrate they bore into.

Some do wood, others do shell, and yours did stone. Those are likely Xylophagella

[Fishinfossil]

Kinda cool nonetheless! @The Jersey Devil  What era you think those clams may be from?

[BellamyBlake]

I agree against crocodile scute because most of the scute I've seen has holes that are much closer together and evenly distributed; these appear more sporadic.

[Harry Pristis]

For comparison: