TY - JOUR
T1 - A horned dinosaur from the El Picacho formation of west Texas, and review of Ceratopsian dinosaurs from the American southwest
AU - Lehman, Thomas M.
PY - 1996/5
Y1 - 1996/5
N2 - Fragmentary remains of a long-frilled ceratopsian dinosaur from the El Picacho Formation (Maastrichtian) of West Texas pertain to an undescribed form. The remains are, however, insufficient to fully characterize this species. This ceratopsian has long thick squamosals with marginal undulations, nasals lacking a discrete horncore, a thin parietal, and large trihedral epijugals. The braincase has very thick lateral walls, and a well- developed postfrontal foramen. Four species of horned dinosaurs are known from Upper Cretaceous strata of the American Southwest: Pentaceratops sternbergii, Chasmosaurus mariscalensis, Torosaurus utahensis, and the El Picacho ceratopsian. All of these belong to the subfamily Chasmosaurinae.
AB - Fragmentary remains of a long-frilled ceratopsian dinosaur from the El Picacho Formation (Maastrichtian) of West Texas pertain to an undescribed form. The remains are, however, insufficient to fully characterize this species. This ceratopsian has long thick squamosals with marginal undulations, nasals lacking a discrete horncore, a thin parietal, and large trihedral epijugals. The braincase has very thick lateral walls, and a well- developed postfrontal foramen. Four species of horned dinosaurs are known from Upper Cretaceous strata of the American Southwest: Pentaceratops sternbergii, Chasmosaurus mariscalensis, Torosaurus utahensis, and the El Picacho ceratopsian. All of these belong to the subfamily Chasmosaurinae.
UR - http://www.scopus.com/inward/record.url?scp=0029663557&partnerID=8YFLogxK
U2 - 10.1017/S0022336000038427
DO - 10.1017/S0022336000038427
M3 - Article
AN - SCOPUS:0029663557
SN - 0022-3360
VL - 70
SP - 494
EP - 508
JO - Journal of Paleontology
JF - Journal of Paleontology
IS - 3
ER -