It should be of no surprise to me to find Parazyga hirsuta in the Centerfield mbr. of the Ludlowville formation (Devonian, Givetian stage). After all, the Centerfield mbr. corresponds to the Hungry Hollow mbr. of the Widder formation in Ontario, Canada. Below are a couple of examples of the species which I first identified here.
Specimen #1 - Pedicle valve
Specimen #2 - Pedicle valve