Skulls Show Dinos Blew Their Horns

摘要

Nothing gets a paleontologist's speculative juices flowing like a strange piece of anatomy. Case in point: lambeosaurs, duck-billed dinosaurs (hadrosaurs) whose skulls sported hollow, bony crests connected to the animals' noses. Scientists have argued that the weird head-gear was good for fighting, snorkeling, smelling, cooling the brain, or signaling to other lambeosaurs with loud, resonant honks.