Silurian Anneloid

[TJE]

The Nautiloids!! oops!... from this age (Silurian), are seldom extractable from their matrix.
Positive and Negative (top & bottom) matrix of this fella are about 3" and 4" thick.

 

[old digger]

Your photo taking is just fine, but it is hard to distinguish with the patina on the rock. If I am correct, Annelids were soft bodied worms that lived in the Silurian seas burrowing into the soft sediment on the sea floor. Beacuse they were soft bodied, they are not commonly found as fossils, but evidence of their burrowing can be found as trace fossils.

 

[TJE]

OOPS!!!! sorry old digger, got my "Mords Wixed"!! ha....meant Nautiloid !!
Your totally right about annelids!...have a few weird ones of them too...think their inner body have crystalized to quartz.

 

[TJE]

It's dead center of pics..3/4 crescent mooned shaped.

 

[old digger]

Now I see what you are talking about. I was seeing the curvature as that of a worm impression. Nice.