Contents

We study the gravity duals of SO/USp superconformal quiver gauge theories realized by wrapping M5-branes on a Riemann surface (“G-curve”) together with a Z2-quotient. When the G-curve has no punctures, the gravity solutions are classified by the genus g of the G-curve and the torsion part of the four-form flux G4. We also find that there is an interesting relation between anomaly contributions from two mysterious theories: TSO(2N) theory with SO(2N) 3 flavor symmetry and T̃SO(2N) theory with SO(2N) × USp(2N − 2)2 flavor symmetry. The dual gravity solutions for various SO/USp-type tails are also studied