The meraxes was a predatory dinosaur that belongs to the family of giant carnivores like giganotosaurus, mapusaurus and carcharodonthosaurus. It could exceed ten meters in length and was taller than a modern house. Even if it wasn't at the level of lethality of a t-rex, it was still a nightmare for any creature smaller than a triceratops or less armored than an ankylosaurus.
The Neanderthals had begun to fidget in fright, and many of them had dropped their jugs in fear. They had put their weapons on, but it was clear from their eyes that they knew they would have done nothing. Against such a large beast, spears and arrows were equivalent to appetizers. They were nothing more than mosquito bites against a dinosaur of that size.