Insects with 570+ answers. Especially if they are winged, they are a swarm. If they are marching on the ground, they are an army. Otherwise they are a colony or nest, since any large group of ants in one place are likely all sisters from the same colony. I disagree that clump is a technical term. Certain species of ants don't build or dig nests, but form living nests out of their own bodies.
It was once estimated at 17 and 15 metres (49 ft) in length, but later estimates put it at around 12.2 meters. 1  The largest known prehistoric snake is Titanoboa cerrejonensis, estimated at 12.8 m (42 ft) in length and 1135 kg in weight. 2  The largest known land lizard is probably Megalania at 7 metres (23 ft) in length.
Image caption Spinosaurus is thought to be the largest known carnivore and would have feasted on huge fish and sharks. A giant fossil, unearthed in the Sahara desert, has given scientists an unprecedented look at the largest-known carnivorous dinosaur: Spinosaurus. The 95-million-year-old remains confirm a long-held theory: that this is the first-known swimming dinosaur. Scientists say the beast had flat, paddle-like feet and nostrils on top of its crocodilian head that would allow it to submerge with ease. The research is published in the journal Science.