Two Early Cretaceous Fossils Document Transitional Stages in Alvarezsaurian Dinosaur Evolution
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DOI: 10.1016/j.cub.2018.07.057
Abstract: Highly specialized animals are often difficult to place phylogenetically. The Late Cretaceous members of Alvarezsauria represent such an example, having been posited as members of various theropod lineages, including birds [1-11]. A 70-million-year ghost lineage… read more here.
Keywords: two early; early cretaceous; evolution; transitional stages ... See more keywords