[D] Vagaceratops irvinensis [sG] [T]
Describer
Sampson, Loewen, Farke, Roberts, Forster, Smith & Titus 2010
Time
Cretaceous Late Campanian
Classification
Ornithischia Genasauria Cerapoda Marginocephalia Ceratopia Neoceratopia Ceratopidae Chasmosaurinae
Diet
Herbivore
Fossilsite
Dinosaur Park Formation, Alberta, Canada
Info
Vagaceratops irvinensis (Sampson, Loewen, Farke, Roberts, Forster, Smith & Titus 2010) > Chasmosaurus irvinensis (Holmes, Forster, Ryan, and Shepherd, 2001)
Holotype
NMC 41357
Etymology
Based upon phylogenetic placement established by the analysis presented herein, a new genus name is indicated (see below). Vagaceratops refers to vagus (Latin), for wanderer, and ceratops, (Greek),
meaning ‘‘horned face,’’ in reference to the occurrence of this clade in the north (Alberta) and south (Utah) of Laramidia during the late Campanian. The type species is Vagaceratops irvinensis Holmes et al. 2001.
The holotype and assigned specimens occur in the Upper Dinosaur Park Formation, late Campanian, Alberta.
Referred Specimens
TMP 87.45.1 and TMP 98.102.8.
Locality and Horizon
Upper lithofacies of the Dinosaur Park Formation.
Revised Diagnosis
Chasmosaurine ceratopsid diagnosed by the following autapomorphies: jugal notch on proximal squamosal broadly rounded and open (not parallel sided); transverse parietal bar straight; epiparietals (ep1-ep3) and epiparietosquamosal (eps) short, forming recurved flat laminae; and predentary length one half that of dentary.
Sampson, Loewen, Farke, Roberts, Forster, Smith & Titus 2010
Time
Cretaceous Late Campanian
Classification
Ornithischia Genasauria Cerapoda Marginocephalia Ceratopia Neoceratopia Ceratopidae Chasmosaurinae
Diet
Herbivore
Fossilsite
Dinosaur Park Formation, Alberta, Canada
Info
Vagaceratops irvinensis (Sampson, Loewen, Farke, Roberts, Forster, Smith & Titus 2010) > Chasmosaurus irvinensis (Holmes, Forster, Ryan, and Shepherd, 2001)
Holotype
NMC 41357
Etymology
Based upon phylogenetic placement established by the analysis presented herein, a new genus name is indicated (see below). Vagaceratops refers to vagus (Latin), for wanderer, and ceratops, (Greek),
meaning ‘‘horned face,’’ in reference to the occurrence of this clade in the north (Alberta) and south (Utah) of Laramidia during the late Campanian. The type species is Vagaceratops irvinensis Holmes et al. 2001.
The holotype and assigned specimens occur in the Upper Dinosaur Park Formation, late Campanian, Alberta.
Referred Specimens
TMP 87.45.1 and TMP 98.102.8.
Locality and Horizon
Upper lithofacies of the Dinosaur Park Formation.
Revised Diagnosis
Chasmosaurine ceratopsid diagnosed by the following autapomorphies: jugal notch on proximal squamosal broadly rounded and open (not parallel sided); transverse parietal bar straight; epiparietals (ep1-ep3) and epiparietosquamosal (eps) short, forming recurved flat laminae; and predentary length one half that of dentary.