Phylogeny of a new gigantic paravian (Theropoda; Coelurosauria; Maniraptora) from the Upper Cretaceous of James Ross Island, Antarctica

A description with phylogenetic analyses is provided for Imperobator antarcticus, gen. et sp. nov., an early Maastrichtian, basal paravian (Theropoda; Maniraptora) from the Naze Peninsula, James Ross Island, Antarctica. In 2003, researchers uncovered the remains of a theropod later referred to Dromaeosauridae. Dromaeosaurids are a clade of maniraptorans including well-known members such as Velociraptor and Deinonychus. The specimen displays a...