Primates are the most successful group of mammals, and the earliest history of paleoclimates can be traced back to the Miocene period, and paleoclamates are divided into suborder curly-nosed monkeys and suborder straight-nosed monkeys. The fossil record of paleontologists suggests that the suborder Curly-nosed Monkey appeared about 60 million years ago and laid the foundation for the emergence of the suborder Straight-nosed Monkey 45 to 50 million years ago.
Family history of paleocapits
From the fossil record, the exact evolutionary relationship between the curly-nosed monkey and the straight-nosed monkey, as well as the origin of primates, is not yet fully known, which has become a hot topic of debate among paleontologists. The earliest primate fossils were found in Morocco, North Africa. However, the Eocene fossil record on the continent is sparse and discontinuous, and it is unclear whether primates originally developed and multiplied on the continent. Archaeologists suspect that primates, like most placental mammals, first appeared and evolved in South Asia during the Late Cretaceous or Paleocene before spreading to other continents. During the Eocene, they may have migrated to other continents, such as Europe, Africa, and North America.
Ancient primates, the suborder Curly-nosed Monkey
The suborder Curly-nosed Monkey includes extant lemurs in Madagascar, as well as lorises and baby monkeys in the hot regions of Asia and Africa. These small and medium-sized lower primates retain some of the original features of near-monkeys and the oldest primates. Most suborders of curly-nosed monkeys are hearing-sensitive and protruding incisors, forming a special tooth structure called teeth, which is mainly used to comb hair. Most of the fingers of the curly-nosed monkey have fingernails, and some species of toes have special claws that can be used to comb the hair. The curly-nosed monkey is a tree creature with limbs that can be grasped, but the big finger is not obvious to the life. This limits their mischievous nature and they cannot jump between tree trunks. Most of the time, the curly-nosed monkey moves around like a quadruped. Unlike the highly gregarious straight-nosed monkey, the curly-nosed monkey prefers to live alone and has no social patterns of behavior in higher primates.
Before the late Pleistocene, the fossil record of curly-nosed monkeys was very sparse. Lemurs once roamed all over Africa, North America and continental Europe, but are now only found on madagascar and the Comoros. The fossil record of monkeys dates back to Eocene Africa. Today, lorises live in the tropics of Africa and Asia.
Extant lemurs are agile, cat-like, and live in trees, so scientists were surprised to discover that a branch of a lemur that was once the size of an orangutan and walked hulking among the woods and on the ground. Madagascar is geographically detached from the african continent, and lemurs take the opportunity to multiply rapidly, occupying ecological niches on the continent that were originally filled by monkeys, apes and other herbivores. There are fewer carnivores on the island of Madagascar, which gives lemurs the opportunity to fully exploit their habitat.
The ancestor of humans, the suborder Orthopedic monkey
The suborder Eun-nosed Monkey, or Great Ape, lived in Places like Africa, Europe and Asia about 25 million years ago. Their ancestors date back much further, and higher primates are thought to be descendants of the Eocene curly-nosed monkeys. Straight-nosed monkeys are the most gregarious of primates. With the exception of orangutans, other primates are social, and even solitary orangutans maintain regular contact with other orangutans. Most straight-nosed monkeys are diurnal and active during the day.
The suborder Orthopedic monkey includes all existing non-human and human apes, as well as their extinct species. Extant apes can be divided into two broad categories: narrow-nosed monkeys, including Old World monkeys, apes, and ancient humans, and broad-nosed monkeys, also known as New World monkeys. These populations indicate that branches appeared in the direction of evolution when primate ancestors began to evolve subgroups with different characteristics.
The narrow-nosed monkey has the following characteristics, the nasal septum is narrow, the nostrils are downward, there are only 8 anterior white teeth permanent teeth, and 2 on each side of the upper and lower jaws. Narrow-nosed monkeys can be further divided into two subgroups, the Old World monkey and the ape family, including apes and archaicans. Overall, the narrow-nosed monkey is larger than the broad-nosed monkey, and in terms of tooth structure, the canine teeth are long and pointed, and there is a gap between the lower front teeth, so that the canine teeth rub against the anterior molars of the lower jaw, thus becoming more sharp. Broad-nosed monkeys are made up of New World monkeys. This distinguishes the straight-nosed monkey primates from the Old World of Africa, where the apes originated, and from the straight-nosed monkey primates found in the New World of the Americas. The New World monkey has a wide nasal septum, rounded nostrils pointing outward, and a total of 12 anterior white teeth and permanent teeth: 3 on each side of the upper and lower jaws.
At the beginning of the Miocene, primates basically lived on their respective continents. Old World monkeys and early great apes are found in Africa, India, Southeast Asia and Japan, while New World monkeys are found in Central and South America. The relative geographical concentration of primates on the African continent caused an evolutionary explosion. This large explosion of evolution led to the rapid rise of apes and ushered in the emergence of humans.