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DINOSAUR TYPE SPECIMENS
A B C D E F F G H I J K L M N O P Q R S T U V W X Y Z

Texasetes pleurohalio
Thescelosaurus neglectus
Thespesius annectens [see Claosaurus annectens]
Thespesius occidentalis
Torosaurus utahensis [see Arrhinoceratops utahensis]
Trachodon annectens [see Claosaurus annectens]
Trachodon tripos
> Triceratops alticornis
Triceratops calicornis
Triceratops elatus
Triceratops galeus
Triceratops hatcheri
Triceratops obtusus
Triceratops sulcatus
Tröodon wyomingensis [see Pachycephalosaurus wyomingensis]

> Triceratops alticornis - Marsh 1887  
Catalogue: USNM 4739
Material: partial set of horns
Classification: Ornithischia, Marginocephalia, Ceratopsia, Ceratopsidae
Collected: G. L. Cannon, 1887
Place: Denver Formation, near Denver, Colorado, USA
Time: Maastrichtian, Late Cretaceous
Original Publication: O. C. Marsh. 1887. American Journal of Science 34:323-331
Other References: Hatcher, Marsh & Lull, 1907; Lull, 1933; Ostrom & Wellnhofer, 1986; Ostrom & Wellnhofer in Carpenter & Currie, 1990

This material was originally named Bison alticornis. (Because of the horn core, Marsh thought that he had found the ungulate mammal Bison in the Cretaceous.) When more material of ceratopsians (horned dinosaurs) were found, he realized that these were a new group of dinosaurs, not mammals. He subsequently transferred the species alticornis to the genus Ceratops. It is now considered to be an indeterminate species of Triceratops.