Two finds from Delaware

[BigJim]

I took my son to the Chesapeake and Delaware canal spoil piles at reedy point a few weeks ago and found these two small pieces. They stood out but I’m not sure if they’re actually anything interesting or not. 
 

 

[Rockwood]

That vaguely mushroom shaped one is interesting.

[val horn]

I would not put money on it, but I was thinking of mouse humerus for the first , though I would like some  photos to  see better.  the second may just be ironstone-- in any case I dont recognize it.  they both could be just ironstone pieces

[jpc]

The  first one is a toe bone.  Look at the end near the 0 on your ruler.  It is round, has divots on the sides (barely visible in the first two pix) and most importantly a ridge along the round surface in the middle, best seen in the third photo.  Metapodial.  Hard to say from here of it complete as the other end is a tough read. 

Edited April 14, 2022 by jpc

[ClearLake]

4 hours ago, val horn said:

I would not put money on it, but I was thinking of mouse humerus for the first

Interesting thought and it is about the right size, but the shape is wrong.  I have attached a picture of a mouse humerus and it is indeed a little over a cm long but I think you can see the shaft is much thinner and the ends are distinctly different that what was posted.

 

 

I think @jpc is spot on, it is a toe bone for all the reasons he pointed out, especially seeing the last picture.  The proximal end (down in the picture) looks a bit broken, but I think you can still see that it looks like the first toe bone, the one that would be attached to the ankle bones.  I don't know if that groove down the length is natural or because it is slightly crushed.

 

I have no idea on the other item, maybe geological rather than fossil, as others have suggested.

[val horn]

I think jpc is correct  i didnt see the circular hollows clearly until jpc said it i was thinking thst it was more marble shaped rather thsn concave  but he is right @Harry Pristis may be sble to give yuo a full id.

[BigJim]

Thanks for all the info. That's a big help, I had found plenty of sources for shell and tooth Identification but not for bones.

[Aaron47]

3 and 4 are clavagella armata. Not bone - a bivalve