Name: Dromaeosaurus
(Running lizard).
Phonetic: Dro-mee-o-sore-us.
Named By: William Diller Matthew and Barnum Brown -
1922.
Classification: Chordata, Reptilia, Dinosauria,
Saurischia, Theropoda, Tetanurae, Coelurosauria, Dromaeosauridae.
Species: D. albertensis (type).
Type: Carnivore.
Size: Up to 2 meters long.
Known locations: Canada, Alberta. USA, Montana.
Time period: Campanian of the Cretaceous.
Fossil representation: Several specimens, but not
especially well represented.
Although
as
the name suggests this was the first
dromaeosaurid to be discovered, it
was not well understood until some of the other dromaeosaurids were
discovered and studied. This has allowed for the gaps to be filled in,
giving a much more accurate representation of what Dromaeosaurus
was
like.
While
Dromaeosaurus still had the sickle
shaped claws on its feet, its skull was proportionately larger and much
more powerful
than most of the other dromaeosaurids, suggesting that it had a greater
reliance on its jaws as a weapon. How the jaws were used is still
incertain as they could have been for holding onto prey, crunching more
heavily armoured prey, or simply have been a primitive trait from
earlier forms. The larger skull also had an enlarged
nasal cavity suggesting an enhanced sense of smell.
Further reading
- The family Deinodontidae, with notice of a new genus from the
Cretaceous of Alberta. - Bulletin of the American Museum of Natural
History 46(6):367-385 - W. D. Matthew & B. Brown - 1922.
- The small Cretaceous dinosaur Dromaeosaurus. -
American Museum
Novitates 2380: 1–49. - E. Colbert & D. A. Russel - 1969.
- New information on the anatomy and relationships of Dromaeosaurus
albertensis (Dinosauria: Theropoda). - Journal of Vertebrate
Paleontology 15 (3): 576–591. - Philip J. Currie - 1995.