Pachycephalosaurus wyomingensis

E366859
ornithischian dinosaur pachycephalosaurid dinosaur species

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.

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All labels observed (3)

Label Occurrences
Pachycephalosaurus 4
Pachycephalosauria 2
Pachycephalosaurus wyomingensis canonical 1

Statements (50)

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

Tyrannosaurus ⓘ
surface form: Tyrannosaurus rex
diet herbivorous ⓘ
possibly omnivorous ⓘ
extinctionEvent Cretaceous–Paleogene boundary ⓘ
surface form: 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 wyomingensis self-linksurface differs ⓘ
surface form: 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 wyomingensis self-linksurface differs ⓘ
surface form: 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 wyomingensis self-linksurface differs ⓘ
surface form: Pachycephalosaurus

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 → Pachycephalosaurus wyomingensis ⓘ
this entity surface form: Pachycephalosauria
Ornithischia → containsGroup → Pachycephalosaurus wyomingensis ⓘ
this entity surface form: Pachycephalosauria
Ornithischia → includesFamousTaxon → Pachycephalosaurus wyomingensis ⓘ
this entity surface form: Pachycephalosaurus
Pachycephalosaurus wyomingensis → parentTaxon → Pachycephalosaurus wyomingensis self-linksurface differs ⓘ
this entity surface form: Pachycephalosaurus
Pachycephalosaurus wyomingensis → genus → Pachycephalosaurus wyomingensis self-linksurface differs ⓘ
this entity surface form: Pachycephalosaurus
Pachycephalosaurus wyomingensis → typeSpeciesOf → Pachycephalosaurus wyomingensis self-linksurface differs ⓘ
this entity surface form: Pachycephalosaurus