Fossil gives insight to evolution of ear.
I love the name of the creature, by the way. Yanoconodon - that just rolls off the tongue. I have a love of words that cram tons of syllables into a word by alternating vowels and consonants....like consonants or manufacturer. I'll have to figure out how to work 'Yanoconodon' into as many conversations as possible.
Oh right, the science. This adds another great piece to vertebrate evolution, showing how a very intricate and complex structure could arise from precursor forms to give mammals their exceptional terrestrial hearing. Expect creationist retaliation within the week.