Cedrorestes
From Latin 'cedrus' meaning 'cedar' and Greek 'oros' meaning 'mountain' (after the Cedar Mountain Formation where the fossil was found), with Greek suffix '-etes' meaning 'dweller'.
Early Cretaceous stages
Cedrorestes is a genus of iguanodontian dinosaur from the Early Cretaceous of Utah. It is based on an incomplete skeleton which was found in the Valanginian-age Yellow Cat Member of the Cedar Mountain Formation.
Diagnosis
- Deep, iguanodontid-like ilium with a prominent lateral process ('antitrochanter') dorsal to the ischial peduncle, a character otherwise diagnostic of Hadrosauridae.
- Poorly developed, boss-like ischial peduncle on the ilium.
- Preacetabular process of the ilium laterally compressed and slightly deflected ventrally, terminating in a rounded point with a ventrolaterally divergent keel.
- Postacetabular process elongated and tapering, with an overhanging lateral process above the postacetabular notch on the dorsolateral border.
Species
Cedrorestes crichtoni Gilpin et al., 2007
Type species
Named for Michael Crichton, author of Jurassic Park and The Lost World.
- Holotype
- DMNH 47994 , Denver Museum of Nature and Science
- Material
- Fragments of several ribs of different sizes; fused sacrum; left ilium; preacetabular process of the right ilium; right tibia; right metatarsal III; and ossified tendons.
- Horizon
- Poison Strip Sandstone Member, Cedar Mountain Formation, Aptian, Early Cretaceous , 121.4–113.2 million years ago
- Locality
- Dave's Camp Site, Utah, United States
References
- Gilpin, D.; DiCroce, T.; Carpenter, K. (2007). A possible new basal hadrosaur from the Lower Cretaceous Cedar Mountain Formation of eastern Utah. Horns and Beaks: Ceratopsian and Ornithopod Dinosaurs 79-89. Indiana University Press, Bloomington. doi:10.2307/j.ctt1zxz1md.10 gilpin2007a