Study identifies Amphicoelias fragillimus as a rebbachisaurid, suggesting new lineage classification.
An important paper is out today: Carpenter (2018) names Maraapunisaurus, a new genus to contain the species "Amphicoelias" fragillimus, on the basis that it's actually a rebbachisaurid rather than being closely related to the type species Amphicoelias altus. And it's a compelling idea, as the illustration above shows.
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Mike Taylor (2018) studied this question.
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