Fish fossil essay 500 words

In the paleontological exhibition room, a mud-yellow stone caught my attention. It was a fish fossil. Look, on its raised spindle-shaped body, the scales are neatly arranged, and the dorsal fin, pelvic fin, pectoral fin, anal fin and tail fin are all clearly visible. Its mouth was pursed tightly, and its eyes were gone, leaving only a small round pit. If the label below it hadn't reminded me, I would have thought it was a beautiful relief left to us by the ancients!

I stood in front of this fish fossil, and as the counselor explained, my thoughts seemed to go back to the distant ancient times. One day tens of millions of years ago, the sky was cloudless, the sun was scorching the earth, seabirds were making disturbing calls on the sea, and the blue sea seemed to be burning. A group of fish swam anxiously on the bottom of the sea, as if they had a premonition that something unfortunate was about to happen.

"Boom——", there was a sudden loud noise under the water, followed by violent vibrations, and the earth seemed to be shaken to pieces. The water roared toward the beach, one wave after another. What the fish were worried about finally happened - a submarine volcano erupted not far from them. The boiling water makes them unbearable. They seemed helpless in the face of this sudden disaster. Each fish opened its small eyes in horror and panicked. They could not escape this natural disaster and were suddenly buried deep in the sand on the seabed.

As the days passed, the fish bodies gradually decomposed, but the hard parts of their remains were preserved. After a long time, inorganic substances replaced the organic substances in the remains, and the remains became petrified and turned into fish fossils.

Tens of millions of years have passed, and the earth's crust has undergone tremendous changes. The seas in the past have turned into land, and the plains have turned into mountains. And those fish fossils were exposed on the surface through the movement and erosion of the earth's crust. Fish fossils have become strong evidence of a tragedy directed by nature in geological history.

Ah, fish fossils, you have recorded a page of geological history and shown a link in biological evolution. What an interesting and scientifically significant lesson you have taught me!

. . . . . . . . . .

If I were a fish fossil

I, a fish fossil, was discovered by archaeologists on Mount Everest. After they found me, they were surprised for a while, then took me out of the ice intact and transported me to a museum for display, saying they wanted to study me! And I am so happy that many people come to appreciate me every day.

I was originally a fish, how did I turn into a fish fossil? Now come and listen to me tell that magical story.

I swam carefree in the water as usual. (That was about hundreds of millions of years ago.) One moment I swam into the coral bush and crawled around in it; the next moment I was hungry again and opened my mouth. I only ate a little fish and shrimp; for a while, my companions and I chased and played. So uncomfortable!

Suddenly, the water shook, and my companion told me to run away. But I am too stubborn and unwilling to leave this "feng shui treasure land". My companions ran away with their lives, and I laughed at them: "What's the big deal? You see, I will continue to live here.

Humph, we'll see! Suddenly, I felt the vibrations getting stronger and stronger, and I wanted to run away, but I had already said it, so I couldn’t go back on it, or else I would be laughed at by them. I emboldened myself and continued to swim in the water.

For a moment, the water shook even more. I looked down and saw: Oh my god! The ground had opened, and a lot of magma was pouring out from it. I almost fainted. The best strategy was to run away! Escape! But it was too late. My escape speed was much slower than the rising speed of the magma. It was so hot! Before I could finish my thoughts, my body was filled with lava. At this time, the magma had rushed out of the sea level, rising higher and higher, and finally solidified. I thought I had nothing and said "goodbye", but later I learned that the outline of my body was preserved by the magma layer. .

Until I was discovered, I lived N years longer than those fleeing fish, and was more valuable than them, which proved that my original choice was very correct.

Scientists conducted research on me and solved many mysteries. Some people said that I "left a series of precious codes for history."

I—— A small fish fossil has a huge impact. People regard me as a treasure.

Haha, I am so great!