We present sub-arcsecond resolution millimeter-wave images of a circumstellar disk in the Bok globule CB 26 .
The presence of an edge-on disk is confirmed by the dust continuum morphology and the velocity field of ^ { 13 } CO emission , which displays a Keplerian rotation pattern about an axis perpendicular to the long axis of the dust emission .
We deduce a mass \sim 0.3 M _ { \odot } for the obscured central star .
The disk is optically thick at mm wavelengths inside 120 AU , has a symmetric 20° warp beyond 120 AU , an outer radius of \sim 200 AU , and a mass of at least 0.1 M _ { \odot } .
We suggest that the CB 26 system is in an intermediate stage between deeply embedded protostellar accretion disks and the more evolved , perhaps protoplanetary , disks around T Tauri stars .