What are these?

[dinosaur man]

Hi, I found these today and am wondering what they are, I’ve been finding them since I was very young and never knew what they were.  Would anyone be able to help.  Thank you for any replies!

[Darbi]

It seem to be concretions to me. 

[dinosaur man]

1 hour ago, Darbi said:

It seem to be concretions to me. 

Thank you!

[Ludwigia]

I would also think that they are small concretions, maybe even oolitic. If you want to learn more about them, it would make sense to track down their stratigraphical origin if you haven't already done so and then study the literature on the lithology of the corresponding formation/member/zone.

[dinosaur man]

6 hours ago, Ludwigia said:

I would also think that they are small concretions, maybe even oolitic. If you want to learn more about them, it would make sense to track down their stratigraphical origin if you haven't already done so and then study the literature on the lithology of the corresponding formation/member/zone.

Thank you!  I’ll see what I can find on these.