“…Though locally abundant in some localities in southern Alberta and northern Montana ( e.g ., Centrosaurus apertus ( Lambe, 1904 ), Styracosaurus albertensis ( Lambe, 1913 ), and Pachyrhinosaurus canadensis ( Sternberg, 1950 )), centrosaurines were previously rare or poorly known from other regions of Laramidia. Our expanding knowledge about centrosaurines includes new taxa from the southwestern United States and Mexico ( e.g ., Diabloceratops eatoni ( Kirkland & DeBlieux, 2010 ), Nasutoceratops titusi ( Sampson et al, 2013 ; Lund, Sampson & Loewen, 2016 ), Machairoceratops cornusi ( Lund et al, 2016 ), Yehuecauhceratops mudei ( Rivera-Sylva, Hendrick & Dodson, 2016 ; Rivera-Sylva et al, 2017 ), Crittendenceratops krzyzanowskii ( Dalman et al, 2018 ), Menefeeceratops sealeyi ( Dalman et al, 2021 )) and new and reinterpreted taxa from Montana and Canada ( e.g ., Coronosaurus brinkmani ( Ryan & Russell, 2005 ; Ryan, Evans & Shepherd, 2012 ), Albertaceratops nesmoi ( Ryan, 2007 ), Pachyrhinosaurus. lakustai ( Currie, Langston & Tanke, 2008 ), Styracosaurus ovatus ( McDonald & Horner, 2010 ; Wilson, Ryan & Evans, 2020 ), Spinops sternbergorum Farke et al, 2011 , Medusaceratops lokii ( Ryan, Russell & Hartman, 2010 ; Chiba et al, 2017 ), Pachyrhinosaurus perotorum ( Fiorillo & Tykoski, 2012 ), Xenoceratops foremostensis ( Ryan, Evans & Shepherd, 2012 ), Wendiceratops pinhornensis ( Evans & Ryan, 2015 ), and Stellasaurus ancellae ( Wilson, Ryan & Evans, 2020 )).…”