7 words in this vocabulary list
adjective having a slender or delicate build; gracefully slender
noun the evolution of similar characteristics in species that do not share a common ancestor
noun Panthalassa
noun the branch of geology concerned with the order and relative position of strata and their relationship to the geological time scale
noun a type of fossilized crinoid marine animal with radiating arms
adjective relating to or based on actualism, the principle that the actual facts and events of the past are the key to understanding the past
noun the process by which a single species evolves into many different species to fill available niches