oh I love this guy’s stupid name it’s basically just a stack of nested prefixes. Parapropalaehoplophorus basically means “similar to Propalaehoplophorus”, which in itself means “early Palaehoplophorus” which then in turn means “ancient Hoplophorus”
So this animal is basically called Similar-Early-Ancient-Hoplophorus. I can only assume this was a deliberate bit to pack on as many prefixes as possible, and I propose that the next step in the chain should be to start adding suffixes too. get ready for Parapropalaehoplophoroides
Pseudoparapropalaehoplophorus would also be an option; to the same effect as the suffix -oides, more or less.