Not Megalodon, this is the first person to

Before Megalodon "rains, winds" the ocean, the new Cladoselache sharks are the first to appear on Earth.

Recorded more than 30 meters long, weighs more than 100 tons and has a bite force that can make a car crumble: As Megalodon's terrible traits, super shark is recognized by the scientific community as "the most fierce assassin. in Earth's history ".

However, before Megalodon super shark "made rain, wind" in the ocean 25 million years ago, it was more than 300 million years ago, in the late Devonian period, the new Cladoselache sharks were "sea gods". The first appearance of the Earth.

Super shark Megalodon.

Cladoselache: The ancestor of shark species in the world

According to archaeological data of scientists after the discovery of their fossils in the Midwestern United States, Cladoselache is the ancestor of the shark.

However, not as big or not as fierce as Megalodon or white sharks today, Cladoselache is small and somewhat . gentle. With its elongated body, about 1.8 meters, weighing between 9 and 23kg, Cladoselache "modestly" eats only small fish or krill in the ocean.

The body is small, the teeth are not as sharp and bristling as we think of sharks, even their teeth are small and dull, making them the shark that is considered to be the most gentle of the relatives. they are later.

Despite being the most benign of the shark, Cladoselache lived at that time as the head of the ocean food chain.

Image of the reconstruction of the shark Cladoselache.(Photo: Autodo).

With the fossils found in the stomach of Cladoselache shark, scientists determined, Cladoselache swallowed small food, instead of using the jaws of tearing prey like sharks later.

About 200 million years later, the second generation of sharks appears: Cretoxyrhina . Famous for its sharp jaws and teeth that are bristling, Cretoxyrhina sharks are exactly the "embodiment" of today's modern sharks.

Due to the fierce prey competition environment, the shark must evolve. If the dorsal fin of Cladoselache ancestral sharks is short, the dorsal fin of the latter species is longer - Like a coming "death" warning.

After that, undergoing the next "6 life" sharks, Megalodon's "ocean monster" appeared. With a tremendous force of bite from 10 to 18.2 tons, Megalodon can kill prey for a brief moment after they fold their jaws.

White shark: Megalodon's "excellent descendant"

White sharks are Megalodon's "excellent descendants."(Source: Time Magazine).

Scientists say the white shark is the most "excellent descendant" of Megalodon, in terms of: Cruel, bite-sized jaws with terrible prey.

Thankfully for us, the size of the white shark has "evolved a bit" much compared to Megalodon's "killing machine" , with body measurements: 6 to 8m long, weighing more than 3,000kg.

Compared to ancestors Cladoselache, "descendant" Megalodon is indeed the top predatory predator of the ocean throughout the history of the Earth: They are greedy slaughterers, completely "holding hands". Food sources of giant whales, dolphins and squid for millions of years!