Haldanodon is an extinct docodont mammaliaform which lived in the Upper Jurassic (Kimmeridgian, about 145 million years ago).

For many years it had the best-known skull material of any docodont, making it vital for understanding the taxonomic position of that mammaliaform group.

It was the first Mesozoic mammaliaform discovered to possess turbinal plates, a complex feature of mammalian nasal cavities.

It likely had a sprawling gait based on the configuration of its limb joints, but this is probably a result of its specialized lifestyle instead of a primitive trait.

The fingers and claws of the forelimb seem to correspond closely to scratch-digging modern mammals like armadillos and pangolins, rather than shovel-diggers like moles.