No comment on what foods have both calcium and vitamin D. Makes me think that this study was funded by companies the produce Calcium and Vitamin D supplements, either that or just a shoddy bit of reporting.
Milk, but the vitamin D is added. Fish, and fish-eating critters, usually have vitamin D but I don't know that any have calcium.
There are ways to get calcium but we're supposed to get vitamin D from sunlight. But it's difficult-to-impossible to get vitamin D from sunlight so we supplement.