User blog comment:Dinosaurus1/I thought of something for Sinoceratops and Pachyrhinosaurus./@comment-31757904-20181013224202/@comment-33613830-20181013225354

No, no, no. What I’m saying I say that this Mattel figure, if it is canon, is actually an InGen Pachyrhinosaurus prototype, and that Masrani and InGen decided to create not only an advanced and probably final Pachyrhinosaurus version, but a complete Sinoceratops version from this as well.

In other words, this is a Pachyrhinosaurus Prototype with some Sinoceratops DNA in it, and InGen extracted the Sinoceratops DNA from this prototype to make an independent Sinoceratops whereas they also created the independent Pachyrhinosaurus later on.

Luke Vader’s theory is nice, although the “female” Sinoceratops would look a lot like Pachyrhinosaurus.