Coral Pleurodictyum Americanum ??

[fifbrindacier]

As i said, you have odd shapes on that stone that can make think there is something, you are very lucky if it is a trilobite (mostly a rare one).

[Stingray]

More ( like mostly not there ) is more accurate

[Stingray]

Just a quick update. The fossil is on the way too FossilDawg for another look, as I may joke a bit about the driveway fill. I would not just discard a fossil in case turns out to be more than fill..I would not chance deliberately destroy something someone else may benefit from and I'm not talking monetarily. 

[doushantuo]

Clarke on Terataspis:

http://ia800209.us.archive.org/16/items/observationsonte00clar/observationsonte00clar.pdf

 

whitfield's short note on a terataspis hypostome

 

whitflichidhypostotrilobitteratasB009a04.pdf

I'm looking at plate 5 of Thomas & Holloway(RSLond.,1988),and i'm thinking it IS possible that it is Terataspis/

info:

Holotype:exfoliated cranidium

Thorax reported on by by Weiman(Journ.Of Pal,1945,p 69-71)

Diagnosis. Echinolichine with glabella that may be weakly constricted opposite posterior
edge of palpebral lobe. Longitudinal furrow very broad and well-rounded in cross section,
extending to occipital furrow posteriorly; joining anterior border furrow in a uniform curve.
Bullar lobe fused with L1; resulting compound lateral lobe flattened (tr.) anteriorly,
subconically inflated posteriorly and bearing two stout spines at its summit. Anterior and
posterior parts of median glabellar lobe separated by transverse furrow; anterior part
ellipsoidally inflated, overhanging longitudinal and anterior border furrows, and projecting in
front of lateral lobes by one half its length; posterior part of median lobe merging with
longitudinal furrows. Palpebral lobe small; posterior section of facial suture meeting cephalic
margin on flank of subgenal notch. Pygidium with four pairs of long, barbed marginal spines;
posterior pleural bands with large dorsal spines at fulcrum. Axis approximately one halflength
ofpygidium, composed of two long (sag., exsag.), poorly defined rings and an inflated terminal
piece with a stout median spine. Postaxial band expanding posteriorly, outlined by furrows
extending towards margin between third and fourth spines. Individuals typically reaching

large size