Tuesday, April 13, 2010

Fossils in the rocks of the garden

Linus found a cracked open river rock from the neighbor's rock garden this weekend and I saw a fossil of an ancient seashell.

Closer examination showed two seashell fossils on the other side as well.

I know they are just seashells but it is interesting just to find them in river rocks essentially used as mulch in a garden. Since we don't know where they came from, no dating can occur. But one can imagine the process, from laying down the fossil, to turning the layers into rock, to the rock being freed to be tumbled smooth in some river or ocean, to finally the garden, must have been a long one. Linus is now a budding paleontologist.

I think they are brachiopod fossils (a brachiopod is just an shellfish). Are there any experts out there who can tell me more?

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