Question

cambrian web quest
what type of species is the trilobite?
arthropod
fish
echinoderm
worm

Explanation:

Trilobites are extinct marine arthropods. They had segmented bodies, hard exoskeletons, and jointed appendages, which are characteristic features of arthropods. Fish are vertebrates with gills and fins. Echinoderms have radial symmetry as adults (e.g., starfish). Worms have elongated, soft - bodied forms without the hard exoskeleton and segmented body plan of trilobites.

Answer:

arthropod