Forget Hump Day — Wednesday Is Horned Dinosaurs Day!

Limpin' ain't easy: Artist's rendering of the dinosaur formerly known as Judith spotlights a left forelimb that was likely useless for walking due to arthritis and infection. Credit: Mike Skrepnick When it comes to dinosaur bling, nothing beat the ceratopsians, with their fantastic variations on horns and frills and hooks and spikes growing out of bony neck shields. Today researchers added two new fossil fashionistas to this bunch of best-accessorized dead things, one of which raises an intriguing mystery. One new addition is out of Utah and goes by the name of Machairoceratops cronusi. Roughly 77 million years old and known from a single partial skull, this beast was probably about as long as a stretch limo and weighed up to 2 tons. But bodies are rarely the big story in ceratopsians, all of which had, more or less, a sturdy, four-on-the-floor build not unlike a rhino. With ceratopsians, it's ...