Hallucigenia

Kingdom: Animalia

Phylum: Onychophora

Class: Xenusia

Order: Scleronychophora

Family: Hallucigeniidae

Genus: Hallucigenia

Lived during the Cambrian, there are 109 species known from the Burgress shale alone. They are about 0.5-3 cm long closely resembling worms with legs. The head is hard to describe do to the preservation of the specimens (for years paleontologist were not sure which end the head was located) because of the preservation of these specimens there are many theories surrounding the feeding habits of this animal. One theory is that it took food by the two rows of spines lining its back (the spines are also not persevered well making paleontologists believe that they were made of a softer material)