Rethinking the “fused ribs” of Triassic gliders

Living from the Permian through the Cretaceous, the so-called “rib” gliders are an interesting lot. And I’m still trying to figure out what’s going on with the ribs and transverse processes. All their closest kin have ribs and none have transverse … Continue reading Rethinking the “fused ribs” of Triassic gliders