STL Science Center

STL Science Center

20 November 2018

Two papers

There are two important papers that everyone interested in Rubeosaurus should take a moment to read today. These papers discuss, first, some interesting remains of "Styracosaurus" ovatus in which the authors, McDonald and Horner, introduce new remains attributed to this species and then analyze the characters and describe the phylogeny of the animal. This paper contains the naming of the new genus, Rubeosaurus, based on this material and is therefore important in knowing where the dinosaur came from and what was known about it previous to its naming in a new genus in 2010. The second paper is about a subadult specimen of the genus that was discovered somewhat recently and described by McDonald in 2017. This description is actually a revisiting of a previous description of another dinosaur (Brachyceratops) and places a young animal within the genus Rubeosaurus. Additionally, this description causes the name Brachyceratops to be considered invalid, or as we more commonly say in paleontology, it is a nomen dubium (a problem name).

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