Chordates – CrashCourse Biology #24

Next time someone asks you who you think you are, just give them the facts. You’re a mammalian amniotic tetrapodal sarcopterygiian osteichthyan gnathostomal vertebrate cranial chordate. Yeah, it’s a mouthful. And in order to understand what it means, you’re going to have to understand the most complex group of animals on earth, and what it Read more…