What species is coelacanth? Why is it called a rebel from the Triassic period?

The strange fish that was accidentally caught by someone was actually a real living dinosaur. A trawler caught a strange fish while fishing in the shallow waters of South Africa. Because of its huge size and strange appearance, it immediately attracted the attention of fishermen, who gathered around it.

The fish is large, about two meters long, and has a hideous face. The fishermen had never seen such a strange fish before. They don't yet know how important the fish they accidentally catch in their nets are:

It is a real living dinosaur.

Back in Hong Kong, the fishermen gave the strange fish to the East London Museum. The fish had been dead for a long time when it was brought to the museum. The museum's director, Miss Courtney Latimer, was faced with a very tricky problem:

Existing storage equipment is not capable of holding such large taxidermy. So she wrote a letter to Smith, a famous fish scientist in South Africa, asking him to come and see this strange fish as soon as possible. However, before Dr. Smith arrived, the fish was rotting and stinking.

Miss Latimer had to peel off the **, throw away the body, save the skull and ** to make the specimen.

When Dr. Smith came to see the fish skin specimens, he immediately realized that what was presented to him was the greatest zoological discovery of the century: a fish that had long been thought to be extinct, belonging to a very old subclass of fish, and the direct ancestor of all amphibians, reptiles, birds, and mammals.

In the eyes of many people, the fish are all the same, nothing special, so this unusual discovery did not attract special attention from the public. But in the eyes of biologists, the new discovery is epoch-making: it is a living coelacanth.

Before that, it was always thought that they were extinct like dinosaurs, but they survived.

It is the common ancestor of reptiles, birds, and mammals, including us humans.

What kind of fish is coelacanth? This is a completely different fish from the common bony fish and sharks we are familiar with. It belongs to a separate group, the subclass of total finned fishes, also called limb-finned fishes.

In short, the total-finned fish are not the same, with a raised forehead, two dorsal fins (most fish have only one dorsal fin), and a pair of limb fins. The skeletal structure inside shows the same structural position and relationship as the legs and feet of terrestrial vertebrates, which is very different from the fin-like structure of ordinary fish. Another peculiarity of the coelacanth is that its tail has a long axis, or rather, its spine extends to the tip of the tail.

The gill cover of the coelacanth is degenerate, the scales are large and thick, and the surface is covered with a layer of enamel.

Coelacanths are the common ancestors of reptiles, birds, and mammals, including us humans. This is a fish that has long been thought to be extinct, belonging to a very ancient subclass of fish, and is the direct ancestor of all amphibians, reptiles, birds, and mammals.

Coelacanths , known as living dinosaurs. Before that, it was thought that they were extinct with the dinosaurs, but they survived.

Coelacanths became extinct about 10,000 years ago.

According to the popular science encyclopedia, coelacanths became extinct about 10,000 years ago.

Coelacanths, Coelacanths, a collective term for some leaf-finned bony fishes. The closely related but extinct species of the suborder Fanfin are thought to be the ancestors of terrestrial vertebrates. In some taxonomic systems, both coelacanths and fanfin fishes are considered to belong to different orders within the subclass Total Fins.

Coelacanths first appeared and evolved hundreds of millions of years ago, when they were extremely abundant on Earth. Coelacanth fossils were found from the end of the Permian (100 million years ago) to the early Cretaceous (100 million years ago). Like other species of fish, coelacanths are less ossified and show a general tendency to move away from early freshwater environments and towards a marine lifestyle.