Snow Hill Island Formation
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The Snow Hill Island Formation is an Early Maastrichtian geologic formation found on James Ross Island, James Ross Island group, Antarctica. Remains of a paravian theropod Imperobator antarcticus have
Artist's reconstruction of the paleoenvironment of the Snow Hill Island Formation
Specimen of the same genus
Specimen of the same genus
Reconstruction
Antarctopelta
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Antarctopelta is a genus of ankylosaurian dinosaur, a group of large, quadrupedal herbivores, that lived during the late Campanian stage of the Late Cretaceous period on what is now James Ross Island,
Snow Hill Island Formation
…antarcticus have been recovered from it, as well as the elasmarian ornithopods Trinisaura santamartaensis and Morrosaurus antarcticus, the ankylosaurian Antarctopelta oliveroi, and the shark Notidanodon sp. Alongside these described genera are also the remains of indeterminate elasmosaurids, lithostrotian titanosaurs…
Antarctopelta recovered remains
Comparison of the teeth (top right) and dentary (bottom row) of Antarctopelta with those of Stegouros
Comparison of vertebrae from Stegouros (left) and Antarctopelta (right)
Cervical vertebrae and pedal bones of Stegouros (left) compared to those of Antarctopelta (right)