Styracosaurus

Styracosaurus is a genus of horned ceratopsian dinosaurs known from Late Cretaceous fossils in what is now North America. Its most distinctive feature was a large neck frill bearing long spikes.

Ceratopsia: Ceratopsia is the dinosaur group that includes horned, beaked species such as Triceratops. Styracosaurus belongs to this broader group of herbivorous dinosaurs.
Styracosaurus albertensis: Styracosaurus albertensis is the type species of the genus, named from fossils found in Alberta, Canada. It anchors the genus and supplies its best-known diagnostic material.
Cranial ornamentation: Cranial ornamentation is the development of conspicuous skull structures such as horns, crests, or frills. Styracosaurus's horns and spiked frill are among the most elaborate dinosaur ornaments.
Centrosaurus: Centrosaurus is a centrosaurine ceratopsid with a large nasal horn and a comparatively different frill ornament pattern. Its skull highlights how varied frills and horns were among close relatives.
Ceratopsidae: Ceratopsidae is the family of large, mostly Late Cretaceous horned dinosaurs with elaborate skulls. This family includes Styracosaurus and its closest well-known relatives.
Dinosaur Park Formation: The Dinosaur Park Formation is a Late Cretaceous rock unit in Alberta, Canada, rich in dinosaur fossils. Fossils assigned to Styracosaurus come from this formation.
Sexual selection: Sexual selection is evolution driven by differences in mating success among individuals. It is one proposed explanation for elaborate ceratopsian skull features.
Triceratops: Triceratops is a large ceratopsid dinosaur with two long brow horns and a short nasal horn. Its familiar three-horned skull contrasts with Styracosaurus's long frill spikes and nasal horn.
Centrosaurinae: Centrosaurinae is a subfamily of ceratopsid dinosaurs often marked by elaborate nasal horns and frills. Styracosaurus is classified among these ceratopsids.
Judith River Formation: The Judith River Formation is a Late Cretaceous geological formation in Montana and nearby regions. Fossil remains attributed to Styracosaurus have been reported from this formation.

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Dinosaur Provincial ParkRelated: Its remains help document the park’s diverse ceratopsian fauna.