Top Definition
The coolest dinosaur to ever walk the earth. It lays spotted black and pink eggs and its skin is dark blue with black lines down it's back. It's build is like that of a T-Rex but with proportional arms. It's eyes are a bright goldenrod color.
"So I'm doing a research paper on the Rihantasaurus! I'm so lucky! "
by TheLesbainDinosaur September 25, 2009
4 Words related to Rihantasaurus

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