Atrociraptor - Wikipedia
en.wikipedia.org
Sjekket: 6.9.2026
VERIFY:period_start_mya: stored=71 suggested=72.2 confidence=medium — Current dating of the holotype's horizon in the Horsethief Member of the Horseshoe Canyon Formation places the genus at 72.2–71.5 Ma, with possible younger referred material to 68 Ma, so a start of 71 Ma excludes the type specimen's own age interval. Wikipedia's summary of the literature gives the temporal range as "Late Cretaceous (Maastrichtian), 72.2–71.5 Ma Possibly lived to 68 Ma".
Åpne kilde ↗Multivariate Analyses of Small Theropod Dinosaur Teeth and Implications for Paleoecological Turnover through Time
PLOS ONE
Sjekket: 6.9.2026
Peer-reviewed analysis by Larson & Currie that treats Atrociraptor marshalli as a valid dromaeosaurid and documents its placement within Dromaeosauridae (Coelurosauria: Maniraptora: Paraves).
Åpne kilde ↗Faunal assemblages from the upper Horseshoe Canyon Formation, an early Maastrichtian cool-climate assemblage from Alberta, with special reference to the Albertosaurus sarcophagus bonebed
Canadian Journal of Earth Sciences
Sjekket: 6.9.2026
Documents the dinosaur faunal and stratigraphic occurrences, including dromaeosaurids, of the Horseshoe Canyon Formation near Drumheller, Alberta — the only region from which Atrociraptor is known.
Åpne kilde ↗Palaeoenvironmental and palaeoclimatic reconstruction of the Upper Cretaceous (late Campanian–early Maastrichtian) Horseshoe Canyon Formation, Alberta, Canada
Palaeogeography, Palaeoclimatology, Palaeoecology (Elsevier)
Sjekket: 6.9.2026
Reconstructs the warm, seasonal humid coastal-plain setting with meandering rivers, swamps and peat-forming wetlands along the Western Interior Seaway in which Atrociraptor lived.
Åpne kilde ↗Atrociraptor
Natural History Museum, London (Dino Directory)
Sjekket: 6.9.2026
Museum taxon page classifying Atrociraptor as a carnivorous theropod, consistent with its recurved, serrated dromaeosaurid teeth.
Åpne kilde ↗High-precision U–Pb CA–ID–TIMS dating and chronostratigraphy of the dinosaur-rich Horseshoe Canyon Formation (Upper Cretaceous, Campanian–Maastrichtian), Red Deer River valley, Alberta, Canada
Canadian Journal of Earth Sciences
Sjekket: 6.9.2026
Extinct taxon; conservation status NE
Åpne kilde ↗Atrociraptor
Natural History Museum, London (Dino Directory)
Sjekket: 6.9.2026
General authoritative museum overview of Atrociraptor marshalli covering its size, age, classification and Alberta provenance, used as the base source for the sv, en, da and no description texts.
Åpne kilde ↗Atrociraptor
Natural History Museum, London (Dino Directory)
Sjekket: 6.9.2026
General authoritative museum overview of Atrociraptor marshalli covering its size, age, classification and Alberta provenance, used as the base source for the sv, en, da and no description texts.
Åpne kilde ↗Atrociraptor
Natural History Museum, London (Dino Directory)
Sjekket: 6.9.2026
General authoritative museum overview of Atrociraptor marshalli covering its size, age, classification and Alberta provenance, used as the base source for the sv, en, da and no description texts.
Åpne kilde ↗Atrociraptor
Natural History Museum, London (Dino Directory)
Sjekket: 6.9.2026
General authoritative museum overview of Atrociraptor marshalli covering its size, age, classification and Alberta provenance, used as the base source for the sv, en, da and no description texts.
Åpne kilde ↗