自19世紀末的化石大戰（Bone Wars）開始，E.D. Cope 與 O.C. Marsh 兩人命名了上百種的恐龍。三角龍（Triceratops）便是其中最有名的物種之一，而且絕大多數的三角龍屬化石都發現挖掘於北美洲。然而，現今多數標本仍有保存不佳與部分缺失的問題。本研究描述一件挖掘自美國蒙大拿州地獄溪層（Hell Creek Formation）的三角龍屬新頭骨標本MFI201801，收藏於化石先生機構 Mr. Fossil Institute (MFI)，並參考 Forster 於1996年根據數件三角龍屬標本所得到的形態統整，討論此新頭骨標本的分類地位。根據其頭骨縫合線、眶前角與鼻角的形態等差異，顯示本研究之頭骨標本同時具有T. horridus與T. prorsus之特徵，可能為新的三角龍屬物種，然而確定新種尚需進一步的分類學研究。此外，此新頭骨標本上有一些撞擊、爪痕等疑似受傷後癒合的紀錄，透過未來的病理組織學與爪痕對比，此新頭骨標本可幫助古生物學家進一步瞭解三角龍屬過去與其它物種的交互作用與其生活型態。
Since the Bone Wars was started in the late 19th century, E.D. Cope and O.C. Marsh have named hundreds of dinosaur species. Triceratops is one of the most renowned species among them named dinosaurs, whose fossils the majority of which were unearthed in the United States. However, most Triceratops specimens are still poorly preserved and partially missing. This study describes a new Triceratops skull specimen (MFI201801), which was excavated from the Hell Creek Formation of Montana, USA, and collected in Mr. Fossil Institute (MFI). Then the exploratory investigate reveals the taxonomic status of this skull. According to the skull sutures lines of the skull, supraorbital horn length and the morphology of nasal-rostrum region concluded reviewed by Forster (1996), this skull presents both characteristics of T. horridus and T. prorsus, indicating that it may be a new Triceratops species, though the hypothesis requires. In addition, some marks that probably were caused by impacts, teeth or claws, are also dependent on histopathological research for revealing their life history and interaction with environment.
