Named By: John A. Whitlock & Jeffrey A. Wilson Mantilla - 2020.
Synonyms: Camarasaurus agilis, Morosaurus agilis.
Classification: Chordata, Reptilia, Dinosauria, Saurishcia, Sauropoda, Dicraeosauridae.
Species: S. agilis (type).
Size: Unknown due to lack of remains.
Known locations: USA, Colorado.
Time period: Late Jurassic.
Fossil representation: Partial back of the skull and three cervical (neck) vertebrae.
of Smitanosaurus have in the past been attributed
but a study in 2020 found them to
represent a distinct genus. Instead of being a macronarian sauropod
dinosaur like Camarasaurus, Smitanosaurus
is instead thought to
have been a dicraeosaurid sauropod dinosaur. Smitanosaurus
after J. August Smith, the person who originally excavated and
sketched the holotype fossils.
- Notice of new American Dinosauria. - The American Journal of Science and Arts, series 3 38:331-336. - O. C. Marsh - 1889.
- The type of the Jurassic reptile Morosaurus agilis redescribed, with a note on Camptosaurus. - Proceedings of the United States National Museum 32: 151–165. - C. W. Gilmore - 1907.
- The Late Jurassic sauropod dinosaur 'Morosaurus' agilis Marsh, 1889 reexamined and reinterpreted as a dicraeosaurid. - Journal of Vertebrate Paleontology. Online edition: e1780600. - John A. Whitlock & Jeffrey A. Wilson Mantilla - 2020.