Diania cactiformus could have been the missing link from lobopods to arthropods. It had strong armored legs and spines all over them.
Diania cactiformus had a rattle-shaped head with no eyes and a squishy body. Some of its twenty legs could stick upwards, possibly to grab prey. It was 2.4 inches long. Some scientists believe that the legs got armored before the body did in evolution between the weird soft-bodied worms and the arthropods.
This weird lobopod was discovered in China. Diania cactiformus has two nicknames, "walking cactus" and "cactus worm."