The Cambrian was a time of "evolutionary experimentation" and adaptive radiation. Many body plans were tested, but only a few succeeded during natural selection (predation, competition, etc.).
The emphasis will be on what event led to the conclusion of the time period.
predominant vegetation types, etc.
The emphasis will be on what event led to the conclusion of the time period.
What position were the continents in during the geologic period? How did their positions influence climate?
Animal Life:
Fossils dating to the Cambrian are widespread, all in the seas. Life included: Coelenterates, protozoa, poriferans, molluscans, worms, echinoderms, trilobites, trilobitomorphs, achaocyathids, and brachiopods.
Plant Life:
Algae was the major forms of plant life. They secreted lime, helping in the formation of rocks.
List all groups of organisms, plants, animals, fungi, etc. that had significant radiations in numbers of species. Also, HOW did these radiations influence organisms around them?
What groups were influenced by extinctions during the geologic period? What hypotheses are there to explain these extinctions?
Where in the world are fossils of this time period collected? Who are the major authorities in primary literature on this geologic period?
A list of works cited.