Additional characters of the Ceratopsidae, with notice of new Cretaceous dinosaurs

  title={Additional characters of the Ceratopsidae, with notice of new Cretaceous dinosaurs},
  author={Othniel Charles Marsh},
  journal={American Journal of Science},
  pages={418 - 426}
  • O. C. Marsh
  • Published 1 May 1890
  • Geology
  • American Journal of Science
THE gigantic horned Dinosaurs from the Laramie, which have already been described by the writer, in this Journal,* are still under illvestigation, and many new points in their structure have recently been brought to light. Some of these are here placed on record for the first time, and taken in connection with those previously made known by the writer, indicate that the gro~l p is a very distinct one, worthy to be called a sub-order, wInch may be termed the Ger·atojJsia. Some of the main… 

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    The American Naturalist
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Anterior part of skull of Triceratops prorslts, Marsh; side view; oneeighth natural size. FIGURE 4.-Front view of same
Feet ungulate. No Sau1'opoda are known from the American Cretaceous
Limb bones solid. Fore limbs small, and feet ungulate
Ot'del' Cm'atopsia. Herbivorons
Skull and brain-cast of Triceratops flabellatus, Marsh; seen from above
The OeratojJs£dce, highly specialized forms fully defined above. (6) 1'!te Nodo8Ctlt1'idm. Heavy dermal armOl'. Bones solid
The Olctosct1tridm. Only a single row of teeth in use
The Omith.01nimidm. I,imb bones hollow. Fore limbs very small; hind limbs of avian type. Feet digitigrade, and unguiculate
The same; seen from below. h', nasal horn-core; n, nasal bone; na
rostral bone; s, squamosal. FIGURE 2.-Brain-cast of Tri(;eratops serratus, Marsh; side view; one-half natural size