Nothing says "I'm single and ready to mingle" like a dose of salty digestive fluid. For sea lampreys, anyway.
Male sea lampreys use a type of bile salt, which is more typically known for digesting fats, to advertise their genetic fitness to females and readiness to mate, new research shows. This stands in contrast to silver lampreys, which use the enzyme for digestion and other nonsexual functions, said Weiming Li, a researcher at Michigan State University.
Diplodocids, the group of long-necked, four-legged, plant-eating dinosaurs that includes the apatosaurus (not a brontosaurus), have never been found in South America until a new species was discovered in Argentina last week. Leinkupal laticauda, whose name means "vanishing family" (heartbreaking!) and "broad tail" (uh, ok), has projections on the bones of its spine that set it apart from any other known species of dinosaur. But new species, never before found in South America, whatever, who cares—one of the most interesting things about this find is that diplodocids were all believed to have died out in the Jurassic Period (you know the one), but this fossil is dated from the Cretaceous, making it the most recent diplodocid ever found.