stegural
Modified neural arch, probably of ural centrum 4, formed by a bony base that may extend along the dorso-lateral surfaces of ural centra and preural centra 1 or 2 and by a well-developed antero-dorsal membranous projection that extends lateral to the base of epural(s) and anterior toward the neural arches and/or spines of preural centra 1 or 2 (Arratia and Schultze, 1992). The stegural is a paired bone.