Scientists have long wondered about the evolutionary relationship between Triceratops horridus and its lesser-known relative, Triceratops prorsus. While they had much in common, Triceratops prorsus had a longer
horridus and T. prorsus. At one point in time, Triceratops was often believed to be a younger version of another ceratopsian, Torosaurus. This was mostly due to the fact that they were in the same subgroup of ceratopsians and had lived in the same fossil formations, though Torosaurus ...
T. prorsus Marsh,1890 Vernacular Name Internationalization English: Triceratops prorsus (Forward three-horned face)
Triceratopsprorsus, he said, is found in the upper unit of the formation, and specimens in the upper portion of the middle unit have moreT. prorsusfeatures and fewerT. horridusfeatures. There is currently some debate about whether two other genera of Ceratopsidae (the taxonomic familyTriceratop...
Evolution of the ceratopsid dinosaur Triceratops has been hypothesized to have proceeded anagenetically, with the geologically older Triceratops horridus having directly given rise to the younger Triceratops prorsus. This evolutionary scenario is based primarily on the upper Maastricthian fossil record of...
horridus. Diceratops was formerly supposed to be a species of Triceratops as well, but is currently documented as a separate genus and species.Triceratops species:T. horridus Marsh, 1889 (type species) T. prorsus Marsh, 1890 Nomina dubia:...
Related to triceratopses:Triceratops horridus tri·cer·a·tops (trī-sĕr′ə-tŏps′) n. A large ceratopsian dinosaur of the genusTriceratopsof the Cretaceous Period, having a large bony frill at the back of the skull, a pair of horns above the eyes, and a single horn on the no...
T. and horridus T. prorsus, despite T’s distinctive cranium. (“Nedoceratops”) hatcheri diverged enough to earn its genus. She reasoned that the two groups were species since the first group had far more specimens. The disparity can still be viewed as a single species with sexual ...
SpeciesT. horridus(type species: Marsh, 1889) TRICERATOPS LINKS Information Sheets About Dinosaurs (and Other Prehistoric Creatures) Enchanted Learning® Over 35,000 Web Pages Sample Pages for Prospective Subscribers, or click below E-mail
Currently, 2 species of Triceratops are recognised, namelyTriceratops horridusandTriceratops prorsus, although considerably more species have been proposed. However, like many things in palaeontology, things are never set in stone (sorry, that’s a very bad joke). It has been suggested that another...