Tag Archives: Deuterostomes.

Animals with skulls – Craniata

By | May 4, 2021

In one of previous post “Biological classification of animals” dealing the classification of all the animals on our planet Earth we have seen that animals with three germ layers (triploblastic animals) can be divided in protostomes and Deuterostomes based on the fate of first opening of the development. Further we have seen that Deuterostomes can… Read More »

Classification of Animals

By | April 17, 2021

What is the need to classify organisms present around us??? “There are an estimated 1.5 – 1.7 million named species on earth (E. O. Wilson, 2001). Of these, invertebrates account for >99%. In reality there may be 13 620 000 species (or more) in total according to the Global Biodiversity Assessment”. 1) To give specific… Read More »