Fossil I.D, Ecton, Staffordshire

[Yuanls]

This week I was fortunate to go on a school trip to Ecton Mine in Staffordshire. Aside from the minerals we were tasked to look for, I found some fossils in the spoil heaps. First one is a brachiopod in carboniferous limestone. There is a mystery object to the left of it. (Photo 1) Initially I thought it looked like the interior of a sand dollar, but the regular structure below the cavities reminds me of a coral. Similar features can be seen on one of the other faces of the stone. (Photo 2) 

 

As well as that, I found a small rock with an almost L-shaped fragment containing serrations or ridges on both sides. I don't have the slightest clue what it is, and any ID would be appreciated. The first photo is the 'top' side, second is the 'bottom' side, the third image is the space between the top and the bottom side, with the top side facing up, and the fourth image is a front-on view which best demonstrates the L-shape. 

 

Cheers, and I look forwards to hearing from you

 

Xiang

 

Edited June 30, 2018 by Yuanls
Formatting problems and grammar

[TqB]

Welcome to the forum!

 

I think your first specimen (to the right of the brachiopod) is indeed a coral, probably a small Michelinia sp.

Can't quite make out the second, maybe crinoid?

 

Here's Michelinia egertoni,  the first a more or less longitudinal section like yours, from the Carboniferous of Durham.

 

And yours:

 

 

[Yuanls]

@TqB Thanks for the ID, greatly appreciated!