The earliest animals that may have gone extinct on Earth are difficult to pin down because it requires taking into account many different extinction events in Earth's history. However, based on research by paleontologists, we can learn about some of the earliest animals that may have gone extinct.
For example, many Polish paleontologists have studied what is generally believed to be the first mass extinction event of a population, known as theBacillus Eventat the end of the Ordovician. It is speculated that this event may be due to the severe depletion of oxygen due to excessive reproduction of archaea or bacteria, which leads to the extinction of a large number of species, many of which are shallow-sea corals, brachiopods, coelenterates, and cephalopod invertebrates.
In addition, the Australia-dwelling Cordylus, considered one of the earliest vertebrates on earth, also suffered extinction at the end of the Paleozoic Era.
Overall, many species on Earth have experienced extinction events, including the earliest living species. However, these species have been missing from the earth for a long time, and archaeologists and paleontologists have revealed the existence and extinction of these animals by studying fossils and other evidence.
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