The Ediacaran fossil with three-fold symmetry that may be related to modern echinoderms with five-fold symmetry is
A) Charnia.
B) Dickinsonia.
C) Tribrachidium.
D) Mawsonites.
Correct Answer:
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Q3: Thought to be the _ of dinoflagellates,
Q4: From rocks formed at the time of
Q5: In Neoproterozoic rocks about 570 million years
Q6: What evidence below does NOT suggest that
Q7: The Ediacaran fossil Spriggina was likely an
Q9: Cratons of modern proportions first began to
Q10: Animals probably originated during
A) Paleoproterozoic.
B) Mesoproterozoic.
C) Neoproterozoic.
D)
Q11: Until at least halfway through Paleoproterozoic (about
Q12: The transition from shelf deposition to deepening
Q13: The Wopmay orogeny, involving the Slave craton
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