I have a cousin who works with a jackhammer in his job sometimes. As a result he comes across a number of interesting items in the rock lay...

My cousin gave me some pictures of these dendrites. It reminds me of looking down on little trees. He did not tell me if he or his brother...

UPDATE: I originally labeled this as a spiny snail but after more research it is a spiny brachiopod.  The descriptions have been now fixed. ...