BRICE C. JONES: Parchment Manuscripts Discovered at Oxyrhynchus. Most of the Oxyrhynchus texts are papyri (i.e., paper made from reeds), but there are a few parchments (made from animal leather. Brice Jones lists them here. There are a couple of New Testament manuscripts, one may be an otherwise unknown NT apocryphon, one is an amulet that quotes the NT, and another is a copy of LXX Genesis.
Much more on the Oxyrhynchus papyri can be found here and links.