34 
A NEW SPECIES OF HORNED DINOSAUR FROM THE UPPER 
CRETACEOUS OF ALBERTA 
By C. M. Sternberg, Geological Survey, Canada 
CONTENTS 
Relationship of Anchiceratops 
Page 
35 
Illustrations 
Plates XXI and XXII. Skull of Anchiceratops longirostris 78-81 
In 1914, Barnum Brown, of the American Museum of Natural 
History, described a new genus and species of horned dinosaur under the 
name Anchiceratops ornatus. 1 The genotype consists of a fine crest or 
neck frill, the posterior portion of the cranium, and the bases of the brow 
horn cores, but lacked the nasal horn core and the anterior portion of the 
skull. 
In 1924, the writer collected from the Edmonton formation, a nearly 
complete skull, without lower jaws, of a horned dinosaur, which is referable 
to the above-mentioned genus. The specimen was discovered in the 
field by the teamster, Mr. G, Paterson, in sec. 8, tp. 32, range 21, 
W. 4th prin. mer., on the west side of and 70 feet above Red Deer river. 
This locality is about 12 miles northwest of Morrin, Alberta, and approxi- 
mately the same as that from which Brown collected his types. 
At this horizon the remains of Anchiceratops are more numerous 
than in any other part of the formation. Besides the specimen here 
described and those collected by Brown, the writer is aware of two skulls 
and one skeleton which have been collected from this horizon, and two 
skeletons, too poorly preserved to collect, and numerous disarticulated 
bones were observed. Most of these specimens are probably referable 
to A. ornatus . The stratum is a sandy clay with much clay ironstone 
in which many of the bones are preserved. It is below the oyster bed 
which is to be found throughout most of the region. 
The type specimen was preserved in a sandy clay and as is common 
with the disassociated skulls of horned dinosaurs, in which the brown 
horns are large, the specimen lay upside down. Before it was completely 
entombed part of the maxillse, the antero-inferior edges of the squamosals, 
and the distal ends of the quadrates were eroded away. 
When compared with A. ornatus the skull is small; the crest is pro- 
portionately narrow and thin; the horns are farther apart at the base and 
point strongly forward, and the parietal fontanelles are long. The nose 
is very long and slender and the specific name longirostris is here proposed. 
The anterior portion of A. longirostris is very unlike that of A. ornatus 
as restored by Brown in his original description, but it is probable that 
when a complete skull of that species is secured it w r ill also show an elongate 
nose. 
* "Anchiceratops A New Genus of Horned Dinosaur Prom The Edmonton Cretaceous of Alberta”; Bull. 
A. M. N. H.. Article XXXIH, 1914. 
