来自蒙大拿州上白垩统海尔河组的有争议的宽头巨角龙（恐龙：角龙科）的一个新标本。
A New Specimen of the Controversial Chasmosaurine Torosaurus latus (Dinosauria: Ceratopsidae) from the Upper Cretaceous Hell Creek Formation of Montana.
作者信息
McDonald Andrew T, Campbell Carl E, Thomas Brian
机构信息
Earth Sciences, Saint Louis Science Center, Saint Louis, Missouri, United States of America.
Geology, St. Louis Community College-Meramec, Saint Louis, Missouri, United States of America.
出版信息
PLoS One. 2016 Mar 14;11(3):e0151453. doi: 10.1371/journal.pone.0151453. eCollection 2016.
Torosaurus latus is an uncommon and contentious taxon of chasmosaurine ceratopsid known from several upper Maastrichtian units in western North America. We describe a partial parietal of To. latus from the Hell Creek Formation of Montana. Although the specimen's ontogenetic maturity means that it cannot inform the ongoing debate over whether To. latus is the old adult form of the contemporary Triceratops, the specimen is one of the best-preserved To. latus parietals and supplements previous descriptions.
宽头托罗龙是一种不常见且存在争议的开角龙亚科角龙类，在北美西部的几个马斯特里赫特阶上部地层中被发现。我们描述了一件来自蒙大拿州海尔河组的宽头托罗龙部分顶骨化石。尽管该标本的个体发育成熟度意味着它无法为关于宽头托罗龙是否是当代三角龙头部成熟形态的 ongoing debate 提供信息，但该标本是保存最好的宽头托罗龙顶骨之一，并补充了之前的描述。 （注：原文中“ongoing debate”未翻译完整，推测可能是“正在进行的争论”之类的意思，你可根据实际情况调整）
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