Nice try, but maybe we should have shown you the hint first:
Arthropods have segmented bodies and jointed legs. Look closely at the reconstruction above. Do Hallucigenia’s legs look more like fleshy tubes or more like the armored, jointed legs of a lobster? Is Hallucigenia’s body divided into discrete segments like a centipede’s or is its body smooth and continuous?
By our definition, Hallucigenia was not actually an arthropod. It did not have jointed legs or a segmented body covered in a hard exoskeleton.
However scientists have had a difficult time figuring out exactly what it was. In the 1990s, after studying newly discovered fossils, scientists finally identified Hallucigenia as a close relative of a rare modern animal known as an onychophoran. Onychophorans are probably closely related to arthropods.
