The human jaw, paleontologists at the University of the Witwatersrand and French specialists at the European Synchrotron Radiation Facility are sure, plays an important role in its sex appeal.
According to experts, 300 million years ago, the species Choerosaurus dejageri lived on Earth. It was from him that the human jaw began to form in the form in which it exists now, notes the lead author of the study, Julien Benoit.
As scientists explain, in the discovered species of mammals, the jaw began to divide into three different types of teeth. In the future, incisors, canines and molars were formed.
Experts note that the Choerosaurus dejageri jaws are unique in that they have two symmetrical canines on the upper and lower jaw. When studying the jaws of this animal, scientists concluded that the teeth were used for intraspecific sexual competition in a group, since these jaws were too weak for use in combat.
After examining the upper and lower jaws of Choerosaurus dejageri, the researchers concluded that the teeth had changed "for sexual development." According to experts, some existing species of animals use teeth to attract the attention of a partner. Also, the demonstration of fangs can be aimed at intimidating the enemy.