What are these odd shaped textured stones/fossils?

[Lone Hunter]

I am just stumped on these. All came from banks of canal at the bottom of a hill. These are all on the shallow level side of canal amongst sandstone, and they are everywhere. On other side of canal a little further down it's grey clay with big red concretions and fossils shown but these aren't present. These whatever they are aren't very heavy but hard like limestone. Only found one with inclusion, and broke one open and it's smooth. Included pictures of both.  They kinda stick to tongue. 

[Lone Hunter]

Forgot fossils from area.

[caterpillar]

Nice crabs

[PaleoOrdo]

Some of the stones have a bumby surface, perhaps strommatoporoids. Which formation is it?

[Jeffrey P]

8 hours ago, PaleoOrdo said:

Some of the stones have a bumby surface, perhaps strommatoporoids. Which formation is it?

That looks like Upper Cretaceous Britton Formation material. Nice ammonites and crabs!

[Lone Hunter]

All of them have a bumpy surface,  from Eagle Ford Kef. They look just like strommatoporoids on the outside but there is no layering on inside.  There appears to be something, maybe inside, causing the raised circular areas, and some of those have an indent in middle. 

Edited April 14, 2021 by Lone Hunter

[fifbrindacier]

Nice fossils, congrats !

[Lone Hunter]

This is going to bug me until I know what they are, someone has the answer!  Could they be strommatoporoids as earlier suggested? 

[JohnJ]

2 hours ago, Lone Hunter said:

....  Could they be strommatoporoids as earlier suggested? 

I don't think they are found in the Eagle Ford Group.  

 

I think most of these are pieces of exfoliated septarian nodules.  Those nodules are present in that Group. 

 

You can read more about how similar examples are formed in one of the most interesting topics on TFF.

[GeschWhat]

16 minutes ago, JohnJ said:

I don't think they are found in the Eagle Ford Group.  

 

I think most of these are pieces of exfoliated septarian nodules.  Those nodules are present in that Group. 

 

You can read more about how similar examples are formed in one of the most interesting topics on TFF.

I thought these looked familiar but couldn't place them!

[Lone Hunter]

Having a hard time grasping this, I don't even know how to explain it. I have read that post you referred to but didn't help me understand how they formed. When I think exfoliating I think peeling layers, and septarian makes me think cracks should go all the way through.  Is the inside part made up of the grey clay in the area?

[JohnJ]

Yes, this would be the interior parts of the septarian nodule after the exterior exfoliated and allowed the rest to 'come apart at the seams'.

 

The linked topic shows the variety of patterns that are possible.

[Lone Hunter]

Now I can see how!  So there had to be something specific in that certain area that made them all develope the same outer crust and bumpy patterns, like they all rolled around in same thing then came in contact with same thing.  Makes sense to me anyway.  Appreciate your time and ability to explain it to me!