I found all 3 of these in the Grayson Formation in Tarrant county. I know the smaller ones are Waconella wacoensis brachiopods. I assume the larger one is the same, but I wanted confirmation that it is also a Waconella wacoensis. I may have found one other almost the same size, but this one is more that twice the size of the other two.
The brachial valve view.
The pedicle valve view. I
The sizes of each one in the last 2 pics left to right.
25 mm long x 20 mm wide x 16 mm thick
16.5 mm long x 16 mm wide x 10 mm thick looks like it may have been crushed in on one side so that increased the width and length some.
16 mm long x 14 mm wide x 10 mm thick
Can anyone confirm or rule out that they are the same?