FOSSILS SPECIMEN: MARGINOCEPHALIA DINOSAURS
Fossils are defined as any evidence of prehistoric life. There are two types of fossils: Body Fossils include remains of skeletal bones, shell, carapace, test and teeth. Trace Fossils are clues the organism existed such as foot prints, tracks, burrows and coprolites (fossil dung).
Marginocephalia meaning “margin-head” are ornithischian dinosaurs that are characterized by a bony shelf or “margin” at the back of the skull. This group includes Pachycephalosaurs and Ceratopsians.To see my model and toy Marginocephalia click here.
Phylum: Chordata – Class: Reptilia – Clade: Archosaur – Clade: Dinosauria – Order: Ornithischia – Clade: Neornithischia – Clade: Cerapoda – Clade: Marginocephalia – Suborder: Ceratopsia
(horned dinosaurs)
Late Jurassic to Upper Cretaceous

Protoceratops Skull (Model)
Upper Cretaceous
Mongolia

Protoceratops Skull (Model)
Upper Cretaceous
Mongolia

Styracosaurus Skull (Model)
Upper Cretaceous
Alberta, Canada

Triceratops Skull (Model)
Upper Cretaceous
North America

Triceratops Brow Horn (Cast)
Upper Cretaceous
North America

Triceratops Tooth
Upper Cretaceous
North America
Phylum: Chordata – Class: Reptilia – Clade: Archosaur – Clade: Dinosauria – Order: Ornithischia – Clade: Neornithischia – Clade: Cerapoda – Clade: Marginocephalia – Suborder: Pachycephalosauria – Family: Pachycephalosauridae
(thick headed lizards)
Upper Cretaceous

Stegoceras Skull (Model)
Upper Cretaceous
North America