Martian meteorites can be compared to analysis carried out by rovers (e.g.
These studies show that some meteorite classes are closely related to some asteroids.
[2] Another, perhaps most useful way to classify meteorites by parent bodies is by grouping them according to composition, with types from each hypothetical parent body clustering on a graph.
[3] Meteoriticists have tentatively linked extant meteorites to 100-150 parent bodies, far fewer than the ~1 million main-belt asteroids larger than a kilometer.
This apparent sampling bias remains an area of active research.