Monoclonius lammersi
Dinosaur: Monoclonius lammersi
Classification
Sources
References: Lehman, T.M. (1990). "The ceratopsian subfamily Chasmosaurinae: sexual dimorphism and systematics".
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References: Lehman, T.M. (1990). "The ceratopsian subfamily Chasmosaurinae: sexual dimorphism and systematics".