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24.08.2016 16:22 -
A Complete Encyclopedia Of The Largest Prehistoric Animals Vol.2 Invertebrates part 6 Trilobites
Trilobites
Trilobites made a sudden appearance in the fossil record. There appears to be a considerable evolutionary gap from possible earlier precursors such as Spriggina, which is found in the 550 million year old Ediacaran-age rocks...
Trilobites made a sudden appearance in the fossil record. There appears to be a considerable evolutionary gap from possible earlier precursors such as Spriggina, which is found in the 550 million year old Ediacaran-age rocks...
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