How many times did large sauropods evolve from smaller

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Question: How many times did large sauropods evolve from smaller sauropods? Did very large sauropods evolve once or more than once within the sauropodomorphs? How many times did long-necked sauropods evolve? Did you infer any instances of short-necked sauropods evolving from longer-necked ancestors? Is there a relationship between the evolution of long-necks and large body masses? If so, explain what factors may have driven this relationship. How many times did tooth shape change on the phylogeny?. Is there any relationship to body mass or neck length? Texas sauropod tracks from the Cretaceous (A, on the left) are known for being wide-gauge, with some distance between the left and right trackways, unlike Jurassic trackways (B, right example, from Portugal). Looking at your phylogeny and the character data, what sauropod group made Texas wide-gauge trackways? Can you find additional evidence in the trackways?

Reference no: EM133592807

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