I've found two kinds of Chonetid type brachiopods in the Centerfield member of the Ludlowville formation in New York. the first is this small shell which I think is Chonetes scitulus. It's possible that it could be a Tropidoleptus carinatus as well but it's hard to tell.
The other type of Chonetid brachiopod is what I believe to be Devonochonetes coronatus. These are somewhat easy to ID based on the size of the fossil, outline shape of the shell and the fine costae (ribs) on the surface.
Both specimens come from the Centerfield member of the Ludlowville formartion (Devonian, Givetian stage) near East Bethany, NY.