Soroavisaurus is an Enantiornithine from late Cretaceous Argentina. Known only from a foot. Named because it seems to be the "sister group" (that is, the closest relative) to true Avisaurus

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Soroavisaurus is an Enantiornithine from late Cretaceous Argentina. Known only from a foot. Named because it seems to be the "sister group" (that is, the closest relative) to true Avisaurus
.