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Well-known ferocious beasts in nature
1. African elephant African elephants are the largest land mammals, exhibiting sexual dimorphism (males and females differ in size and phys...
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The Rise and Fall of the Armored Fish Family
Before the earliest vertebrates were discovered in the Chengjiang Fauna in China, the earliest traces of vertebrates we...
Physical characteristics and living habits of lampreys
Lampreys resemble ordinary eels, with slender bodies, bare, scaleless skin, and a long dorsal fin that extends to the t...
The first revolution in the history of biological evolution (the origin of the jaw)
In the history of biological evolution, several momentous events have occurred. These events, far exceeding the sum of ...
The most primitive bony fish—spiny lobe fish
As early as the late Silurian period, when placoderms had just appeared, the most primitive branch of bony fish—the spi...
The evolution of the most primitive placoderms
The most primitive jawed fish discovered to date are placoderms, which first appeared in the Late Silurian period and f...
The story of high-level fish wearing nomadic clothing and riding horses.
Life originated in the primordial ocean, and the earliest vertebrates also emerged in water. Armored fish and placoderm...
The structure of the slit-mouth shark (an ancient marine killer)
The sharks we are familiar with belong to the cartilaginous fish family. Cartilaginous fish are almost entirely marine ...
The evolutionary path of primitive bony fishes (true conquerors of the waters)
During the Middle Devonian, some more advanced bony fishes emerged. Part or all of their skeletons ossified into hard b...
The wave-like evolution of ray-finned fish
Ray-finned fishes are the most successful aquatic group of all vertebrates, occupying almost every ecological niche in ...
Evolution and characteristics of reptiles
Reptiles are the earliest amniotes to appear on Earth, evolving from labyrinthoids, a type of amphibian. This transitio...
The Origin of Lizards and Reptiles
There is a city called Seymour in Texas, USA. In the north of the city, there are large areas of Early Permian sediment...
Phylogenetic relationships among reptiles (reptile family tree)
We already know that, based on the development of the temporal region of the skull, specifically the development and ch...
Fish that breathe air
During the Devonian period, the earliest lobe-finned fish appeared and differentiated into two major categories: lungfi...
Characteristics and evolution of lungfish
The earliest representative of lungfish is the bipterygian fish of the Middle Devonian. Based on this, lungfish were re...
Evolution of lobe-finned fish
The earliest representative of lobe-finned fishes is the bony-scaled fish from the Middle Devonian period. From it, we ...
