«نمونه کلاسیک» دوشکلی جنسی در پیشینه فسیلی در واقع تفاوت های ظریف بین نر و ماده را نشان می دهد

'Classic example' of sexual dimorphism in fossil record actually shows nuance between males and females

For decades, paleontologists have held up uintatheres as a prime illustration of sexual dimorphism, or the tendency for males and females of a species to be physically different. Notable for their large size, prominent horns and canine teeth, uintatheres emerged about 58 million years ago, fewer than 10 million years after a space rock killed the dinosaurs, and show up in the fossil record for the next 20 million…