The first animals on earth according to science

The Earth is a planet that was formed over billions of years and has experienced complex geological and biological processes. In the history of life on Earth, many questions have arisen among people regarding what the first animals on Earth were like. Research related to this has gone through a long process involving several scientists.

Read also: The origin of prokaryotic cells comes from ancient cells that experienced evolution

The results of the research show that living beings on Earth have gone through evolution from the simplest forms to very complex living beings. The scientific process of evolution causes changes in organisms at the individual and population levels. The mechanisms by which evolution occurs include natural selection, genetic mutation, no flow or cross-marriage, and many others.

The First Animals on Earth and the History of Their Discovery

Since the creation of planet Earth, life first took the form of microscopic organisms that depended on oxygen to survive. These organisms then reproduce and undergo evolution to create different new organisms. Starting from here, various living creatures began to appear and grow on Earth.

Discover the first sea sponge-like animal

Based on research done a long time ago by scientists, many beliefs say that the first animals on Earth were single-celled creatures, a type of sea sponge. This type of sponge lives in many oceans and in groups with more than 5000 different species.

Their body structure is made up of cells that have different functions but do not form organized substances. Research on genetics and morphology shows that sea sponges are the ancestors of other animal groups. Then sponges evolved a long time and created species in specific numbers.

New Research Reveals First Animal Species

In previous research, it was found that the first animals were from the group of sea sponges. However, a new study in America in 2008 rejected these findings.

That the study of genetic material analysis by American National Science Foundation revealed that there were spit-like animals that lived earlier than sponge-like creatures.

Read also: Ancient Kongonaphon Kely animal found by scientists, measuring 10 cm

Types of saliva Jelly comb An organism is an organism that comes from the derivative parts of another organism that then begins to divide into different animal species. The discovery of this animal surprised the world of science because now the international consensus considers it Jelly comb as the first animal on Earth.

However, several studies are still continuing to do more in-depth research on the first creatures or animals on Earth.

Finding large animals

In 2020, scientists have succeeded in discovering perhaps the longest and largest animal on Earth that has been observed in the deep ocean of the sea in Australia. This creature Siphonophore whose body length is about 45 meters.

According to the Monterey Bay Aquarium in California says that Siphonophore live below sea level at a depth of 700 to 1000 meters. The researchers found Siphonophore This is one of several things that have been discovered before about large animals.

Research methods to find different ancient creatures in the sea do not always have to dive to a certain depth. The proof is that in 2011, a rare whale washed up on the coast of New Zealand, and this species has never existed before.

At the same time, a lot of research has been done on large land animals. according to Nature Conservationthe African bush elephant was the largest land animal that ever lived on Earth. This elephant has a large body with a height of 4 meters and a weight of up to 11 tons.

Humans continue to search to find the largest land animals through the discovery of fossils. To date, the largest animal discovery among the giants is a group of sauropod dinosaurs or so-called titanosaurs.

According to paleontologists, titanosaurs were giants with long necks and their size was equal to 6 to 7 adult African elephants.

Read also: Why were ancient animals big, the reason is amazing

Numerous studies of the first animals on Earth have helped scientists study the biological mechanisms of both growth patterns and tissue formation over time. This presents new information regarding the growth of different species and the development of their interaction patterns with the environment. (R10/HR-Online)