My nice new Sigma lens takes a look at a piece of Chazy limestone with its Ordovician fossils.
These critters lived their lives in warm ocean waters near southern Africa. Thanks to plate tectonics and continental drift, they came to rest in northern New York and Vermont on Lake Champlain. I picked this piece of ancient ocean bottom on our beach at camp when I was searching for beach glass and other flotsam and jetsam.
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