Tinospora wilkinsonii was an early Eocene member of the moonseed family known from the hard inner stone of its fruit. Living Tinospora are woody climbers in tropical and subtropical forests, so a climbing habit is a reasonable comparison for the fossil species, although no attached London Clay stems or leaves demonstrate the growth form directly.

The endocarp was deeply boat-shaped and strongly ornamented, forming a tough protective case around the seed. Compared with Tinospora excavata it was larger and carried much more prominent spines, while the style was especially conspicuous in ventral view. These reproductive structures make the fruit distinctive even though the rest of the plant is unknown.