When did most of the major groups of animals first appear during the paleozoic era?

Question

26-05-2018
Biology

contestada

When did most of the major groups of animals first appear during the paleozoic era?

Respuesta :

Otras preguntas

Taft Industries had 250,000 shares of common stock outstanding before a stock split occurred and 500,000 shares outstanding after the stock split. The stock spl

What is the latin translation for Fabulamne, Vergili, tuam de Troianorum fuga multis verbis olim narrabas"

Can you explain the allusion to Nero in hamlet's closing speech in act 3

Which of the below structures acts to convert sound waves to vibrations? A) cochlea B) pinna C) tympanic membrane D) Organ of Corti E) vestibulocochle

The constitutional amendment that prohibited denying voting rights to people based on race or color is the

The birth of a small star and a very massive star are the same, but the end of their life is very different. Describe the difference in the fate of a small star

Choose the correct classification of 3x4 − 9x3 − 3x2 + 6. 5th degree polynomial 4th degree polynomial 9th degree polynomial 24th degree polynomial

The times for the mile run of a large group of male college students are approximately Normal with mean 7.11 minutes and standard deviation 0.74 minutes. Use

You are to paint the globe held aloft by a statue of Atlas. Its diameter is 10.5 in. How much surface area must you cover with paint if 27 square inches does no

What is a vital point for most marketers

jamuuj jamuuj · Answer 1 · 2018-06-05T11:06:07+02:00

Most major animal groups first appeared during the Cambrian Period (544 to 505 million years ago) during the Paleozoic era.
During the Cambrian period hard shelled animals appeared in great numbers for the first time, significantly because shallow seas flooded the continents. It is truly an astonishing period in evolution of life on earth. Most major groups of animals first appear in the fossil record, an event popularly and scientifically called the Cambrian Explosion.