Entry 1 sense Webster, 1913 Gyrolepis /(jĭ*rŏl"ē̇*pĭs)/ · Gy·rol·e·pis · IPA 01 n. A genus of ganoid fishes, found in strata of the new red sandstone, and the lias bone beds. 1. A genus of ganoid fishes, found in strata of the new red sandstone, and the lias bone beds.(Paleon.)