Feeling old yet?Fossil Out BoyTwo “Punk” and “Emo” fossils — and we don’t mean elder members of the music circles that once enjoyed greater cultural cachet — are challenging scientists’ understanding of the evolution of mollusks. The scene, folks, is not dead.As detailed in a study published in the journal Nature, the researchers created 3D models of the 430 million year old specimens, revealing strikingly complex features that suggest an early group of mollusks called aculifera weren’t as primitive as once believed.To their modern human eyes, however, the scientists saw…