Museum display of sea scorpion (Eurypterus remipes) fossils and model; photo by Steve Lew on Flickr (noncommercial use permitted with attribution / share alike).
Official State Fossil of New York
A prehistoric sea scorpion (Eurypterus Remipes) was designated the official state fossil of New York in 1984. Eurypterids are very rare fossils worldwide; New York state is one of only a few places in the world where euryterids can be commonly found. All State Fossils
Eurypterus Remipes is an extinct relative of the modern king crab and sea scorpion. This creature lived over 400 million years ago during the Silurian Age and crawled along the bottom of the shallow, brackish sea then covering much of what is now New York state.