Question

cambrian web quest
what other types of species shared the cambrian period with trilobites? choose 4.
reptiles
worms
dinosaurs
sponges
amphibians
echinoderms
mollusks

Explanation:

During the Cambrian Period, trilobites co - existed with various species. Worms (such as annelids), sponges (Porifera), echinoderms (like early starfish - like forms), and mollusks (primitive mollusks) were present. Reptiles, dinosaurs, and amphibians evolved much later.

Answer:

worms, sponges, echinoderms, mollusks