What are synappers?

Synapsides ("fucking arc") are one of two groups of amniot or non -marked terrestrial animals, which includes mammals and their extinct relatives, therapy. The second group, Sauropsids, includes reptiles, birds and disappeared relatives. Together, synapers, sauropsids and amphibians form all tetraps existing and extinct, with the exception of a few tetraples of the tribal groups that existed before these groups were hanging from each other 320 million years ago, in the late carbonifer.

The only living synappers are mammals. Because the word "mammal" is widely understood and the "synpsid" is sometimes not the word synapsid to refer specifically to the extinct group, which was previously called reptiles similar to a mammal. Recently, it has been realized that these animals actually lacked some universal features between plasims, and thus got their own group. Sometimes they are referred to as "STEM-SAMMALS. ModernSynapsides are all distorted, but many of the first synappers have been cooled distorted, causing this characteristic undefinitive. Like today's mammals, the ancient synapsis of glandular skin had no weight. It is not known exactly what the synappers have developed on the body and the mammary glands. Sometimes early synappers are called "naked lizards" because they resembled lizards, only without weight. Another evolutionary innovation of synappers was the first differentiated teeth. As the synappers continued to evolve, more mammals and less reptiles have become more.

both the earliest synappers and sauropsides looked like small lizards. Interestingly, the first known synapsid, Archeothyris , which lived 320 million years ago, was slightly larger than the earliest known Sauropsid, Hylonomus , which lived 315 million years ago, and even prey. This role has been perverted during 155 million year -round dinosaurs, afterShe has recently reversed it when the dinosaurs died out, and mammals were often taken up by lizards and snakes.

Soon Synapésid Lystrosaurus was one of the only territic animals that survived the extinction of Permii-Terciars, the "mother of all bulk extinctions" in which ~ 99.5% of all individuals and 70% of all types of territorial vertebrates died. For several million years, Lystrosaurus was one of the only tetraples that wandered along the continents, the level of uniformity that could not be seen during another geological era.