taxonomic group
(Science: zoology) A taxon with all its subordinate taxa and their individuals, for example the taxonomic groupinsecta consists of all insects and their taxa.
Life, as we know it today, is presumed to have started in the sea and many of them were likely eukaryotic animal-like organisms. Because of the expanding diversity of animal life forms, taxonomists eventually came up with a classification scheme to group them into various phyla. Know more about the early animals that were likely the first ones to roam the ancient seas through this tutorial...
Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Over time, mammals have diversified into the placentals and the marsupials. Get a better understanding of how the mammals became dominant based on natural selection and geological events as elucidated in this tutorial...