The beginning of the Cambrian shows fossils with skeletons.
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Q8: A description of early amphibians in the
Q9: Homodont toothed animals show several different sized
Q10: Therapsids show transitional status between reptiles and
Q11: The first nucleated life were the eucaryotes
Q12: The earliest evidence of what has come
Q14: A tetrapod is known from its four
Q15: An example of analogy in evolution would
Q16: As of now, paleontologists put the origin
Q17: The first of our phyla, the Chordata,
Q18: The first amniotes were insects.
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