Microbrachis was an elongated, salamander-like creature, about  long, with over 40 vertebrae instead of the average 15–26 in its living relatives. It had minute limbs, and probably swam using fish-like lateral body movements.
The Microbrachis was a lengthy, amphibian-like animal, measuring about  long, featuring more than 40 vertebrae compared to the usual 15–26 found in its contemporary species. Its small limbs probably propelled it through the water with a motion similar to that of fish.