[D] Cedrorestes crichtoni [sG] [T]
Describer
Gilpin, DiCroce, and Carpenter 2006
Time
Cretaceous Early
Classification
Ornithischia Ornithopoda Hadrosauridae
Diet
Herbivore
Fossilsite
Cedar Mountain Formation, Yellow Cat Member, Utah, US
Info
Possible basal hadrosaur from the Lower Cretaceous Cedar Mountain Formation of eastern Utah
Carpenter & Ishida (2010) Early and “Middle” Cretaceous Iguanodonts in Time and Space Journal of Iberian Geology 36 (2) 145-164
Cedrorestes crichtoni Gilpin, DiCroce and Carpenter 2006
Locality
north of Moab, Utah, USA.
Horizon
near top of Yellow Cat Member, Cedar Mountain Formation.
Age
late Barremian (Ludvigson et al., 2009 ; Zigler et al., 2009).
Comments
The holotype ilium retains the deep profile seen in basal ankylopollexians (e.g., Camptosaurus), but has a prominent flange-like lateral process considered an autapomorphy of hadrosaurids (Sereno 1999, supplemental material).
Such a flange is absent in the hadrosauroid Equijubus, which also retains a deep ilium, suggesting that Cedrorestes is more derived than Gilpin et al. (2006) originally suggested. The preacetabular process is short, being about 25% of the ilium length. The ischial peduncle is slightly expanded laterally onto the postacetabular process. The postacetabular notch is broad and shallow
Gilpin, DiCroce, and Carpenter 2006
Time
Cretaceous Early
Classification
Ornithischia Ornithopoda Hadrosauridae
Diet
Herbivore
Fossilsite
Cedar Mountain Formation, Yellow Cat Member, Utah, US
Info
Possible basal hadrosaur from the Lower Cretaceous Cedar Mountain Formation of eastern Utah
Carpenter & Ishida (2010) Early and “Middle” Cretaceous Iguanodonts in Time and Space Journal of Iberian Geology 36 (2) 145-164
Cedrorestes crichtoni Gilpin, DiCroce and Carpenter 2006
Locality
north of Moab, Utah, USA.
Horizon
near top of Yellow Cat Member, Cedar Mountain Formation.
Age
late Barremian (Ludvigson et al., 2009 ; Zigler et al., 2009).
Comments
The holotype ilium retains the deep profile seen in basal ankylopollexians (e.g., Camptosaurus), but has a prominent flange-like lateral process considered an autapomorphy of hadrosaurids (Sereno 1999, supplemental material).
Such a flange is absent in the hadrosauroid Equijubus, which also retains a deep ilium, suggesting that Cedrorestes is more derived than Gilpin et al. (2006) originally suggested. The preacetabular process is short, being about 25% of the ilium length. The ischial peduncle is slightly expanded laterally onto the postacetabular process. The postacetabular notch is broad and shallow