From Comanche Peak

[rwise]

Found on Comanche Peak, Goodland Formation, Hood Co., TX , need help with ID, is this just a burrow or something else?

[tmaier]

I've rotated the object to show what looks like the proper bedding plane. From the direction of one of the inclusions on the right and the appearance of the surface on the top, I think this is how it sat in life.

It might be a burrow, but it has a weird orientation relative to the bedding plane (if I have the correct orientation).

Also, it might be the lip of the aperture of the cast of a gastropod.

Unforntunately the only way I can think to sort out which one it is would be to excavate the matrix a bit to see if it has some more structure to it or if it is only a tube.

[BobWill]

I'd say it looks like some of the burrows I saw on your mountain hill plateau Not enough symmetry to be critter remains.

[tmaier]

The lumpiness does seem to indicate it is a burrow.

[RyanNREMTP]

Looks like a burrow to me.