I am a total expert on evolution. There is 100% sufficient proof of total common ancestry for man, apes and all other mammals on earth in the field of genetic thus dna studies. This book didn't outright state that. And about what this book says about Haeckel and embryology. Here's the complete truth. Haeckel was a fraud about the embryology drawings (like the book said) but modernday ultrasounds and other photos of human and other mammal embryos definitely show a strong resemblance and show common ancestry for humans with apes, dogs, goats, etc. (unlike what the book said).