Is Cambrian explosion true?

The Cambrian explosion or Cambrian radiation was an event approximately 541 million years ago in the Cambrian period when practically all major animal phyla started appearing in the fossil record. It lasted for about 13 – 25 million years and resulted in the divergence of most modern metazoan phyla.

What evidence supports Cambrian explosion?

Morphology and phylogenetics revealed by fossils. Perhaps the strongest evidence to support the Cambrian evolutionary explosion of animal forms is the first clear appearance, in the Early Cambrian, of skeletal fossils representing members of many marine bilaterian animal phyla.

What is the relationship between the Precambrian extinction and the Cambrian explosion?

What is the relationship between the Precambrian extinction and the Cambrian explosion? the Precambrian mass extinction was caused by A combination of climatic and geologic events. No matter what the cause, the extinction paved the way for a burst of new life called the cambrian explosion.

What are the causes of the Cambrian explosion?

The Cambrian explosion, otherwise known as the Cambrian radiation, occurred during the Paleozoic era . Scientists believe that various factors may have triggered the sudden change, including an increase in oxygen levels, a shift in climatic conditions and the creation of more habitable environments.

What sparked the Cambrian explosion?

The intense modern interest in this “Cambrian explosion” was sparked by the work of Harry B. Whittington and colleagues, who, in the 1970s, reanalysed many fossils from the Burgess Shale and concluded that several were as complex as, but different from, any living animals.

What animals lived in the Cambrian explosion?

The Cambrian Explosion of Animal Life. Echinoderms, mollusks, worms, arthropods, and chordates arose during this period. One of the most dominant species during the Cambrian period was the trilobite, an arthropod that was among the first animals to exhibit a sense of vision.

Did consciousness cause the Cambrian evolutionary explosion?

The place of consciousness in evolution is unknown, but the actual course of evolution itself may offer a clue. Fossil records indicate that animal species as we know them today including conscious humans all arose from a burst of evolutionary activity some 540 million years ago (the “Cambrian explosion”).

https://www.youtube.com/watch?v=q1-Iqt02Asg