Pachycephalosaurus wyomingensis

E366859

Pachycephalosaurus wyomingensis is a Late Cretaceous dome-skulled herbivorous dinosaur known for its extremely thick, bony skull roof, thought to have been used in head-butting or display behaviors.

All labels observed (3)

How this entity was disambiguated

Statements (50)

Predicate Object
instanceOf ornithischian dinosaur
pachycephalosaurid dinosaur
species
bodyLength approximately 4.5 meters
bodyMass approximately 300 to 450 kilograms
clade Marginocephalia
linked to: Ceratopsidae
class Reptilia
coexistedWith Edmontosaurus annectens
Triceratops horridus
linked to: Triceratops

Tyrannosaurus rex
linked to: Tyrannosaurus
diet herbivorous
possibly omnivorous
extinctionEvent Cretaceous–Paleogene extinction event
family Pachycephalosauridae
feedingAdaptation teeth suited for browsing vegetation
firstDescribedBy Barnum Brown
firstDescribedInYear 1943
fossilsFoundIn Montana
South Dakota
Wyoming
fossilTypeMaterial partial skull
genus Pachycephalosaurus
geologicalFormation Hell Creek Formation
Lance Formation
kingdom Animalia
knownFrom cranial material
limited postcranial remains
livedInAge Maastrichtian
livedInContinent North America
livedInPeriod Late Cretaceous
locomotion bipedal
namedAfter Wyoming
order Ornithischia
parentTaxon Pachycephalosaurus
phylum Chordata
possibleBehavior flank-butting
head-butting
visual display
posture upright bipedal stance
reproduction oviparous
skullCharacteristic bony knobs and spikes on skull
dome-shaped skull roof
extremely thick cranial dome
suborder Cerapoda
tailCharacteristic stiffened tail with ossified tendons
taxonRank species
temporalRangeEnd about 66 million years ago
thermoregulation likely homeothermic or mesothermic
toothType small leaf-shaped teeth
typeSpeciesOf Pachycephalosaurus

How these facts were elicited

Referenced by (7)

Full triples — surface form annotated when it differs from this entity's canonical label.

Hell Creek Formation containsFossil Pachycephalosaurus wyomingensis
Dinosauria hasMember Pachycephalosauria
linked to: Pachycephalosaurus wyomingensis
Ornithischia containsGroup Pachycephalosauria
linked to: Pachycephalosaurus wyomingensis
Ornithischia includesFamousTaxon Pachycephalosaurus
linked to: Pachycephalosaurus wyomingensis
Pachycephalosaurus wyomingensis parentTaxon Pachycephalosaurus
linked to: Pachycephalosaurus wyomingensis
Pachycephalosaurus wyomingensis genus Pachycephalosaurus
linked to: Pachycephalosaurus wyomingensis
Pachycephalosaurus wyomingensis typeSpeciesOf Pachycephalosaurus
linked to: Pachycephalosaurus wyomingensis