FIGURE 5.

Virtual endocasts of the varanopid bony labyrinth. (a‐e) Mesenosaurus, (f‐j) ROMVP87043, (k‐o) ROMVP86543, (p‐t) Mycterosaurus, (u‐y) Aerosaurus in (a,f,k,p,u) right lateral, (b,g,l,q,v) dorsal, (c,h,m,r,w) ventral, (d,i,n,s,x) anterior, and (e,j,o,t,y) posterior views. Scale bars equal 5 mm. aasc, ampulla of the anterior semicircular canal; alsc, ampullae of the lateral semicircular canal; asc, anterior semicircular canal; fv, fenestra vestibuli; lsc, lateral semicircular canal; psc, posterior semicircular canal; scc, secondary common crus; v, vestibule