(Cedar lizard- after the Cedar Mountain Formation).
Named By: V. Tidwell, K. Carpenter, & W. Brooks - 1999.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Sauropodomorpha, Sauropoda, Titanosauriformes, Brachiosauridae.
Species: C. weiskopfae (type).
Known locations: USA, Texas - Paluxy Formation, Utah - Cedar Mountain Formation - Yellow Cat member.
Time period: Barremian to Aptian of the Cretaceous.
Fossil representation: Partial post cranial remains of at least three individuals.
mountain Formation is becoming increasingly well known for the presence
of brachiosaurid sauropods,
and aside from Cedarosaurus,
are also present in different Members.
Another sauropod, Brontomerus
is also known from the Cedar Mountain
Formation. Cedarosaurus stands out from others by
a number of
features, but mainly the foreleg bones which are noted as being more
gracile than the other genera there.
As a brachiosaurid sauropod, Cedarosaurus was probably a browser of tall vegetation growing around the height of the tree canopy. This would have allowed it co-exist with other types of herbivorous dinosaurs such as ornithopod like Cedrorestes, Hippodraco and Iguanocolossus as well as armoured nodosaurs like Gastonia.
A principal predator of Cedarosaurus may have been the large dromaeosaurid theropod dinosaur Utahraptor, fossils for which have been in the same areas dating from roughly the same time as Cedarosaurus. Bigger threats may have also come from large carcharodontosaurid theropods similar to Acrocanthosaurus which would have been roaming around what would become the United States back in the early Cretaceous.
- New sauropod from the Lower Cretaceous of Utah, USA, V. Tidwell, K. Carpenter, & W. Brooks - 1999.