Yes
Mammals have only between 4000 and 5000 known species of mammals that are vertebrates. The largest group would be Osteichthyes (or bony fish) which has an astonishing amount that adds up to roughly 29,000 species known to man.
The organisms with the greatest number are typically single-celled bacteria due to their high reproductive rates and vast ecological distribution across various environments. Insects also have a high number of species and individuals, but single-celled bacteria are generally more abundant in terms of sheer numbers.
Fish hold the title for the most numerous vertebrates on Earth. With over 30,000 known species, they are found in a wide range of aquatic environments worldwide.
These numbers are not accurate, as accurate number of animal species on earth has yet to be discovered. Currently it looks like less than 3% of the known species of animals on earth are vertebrates (have back bones). There are around 50 000 species of vertebrates, most of which are fish. Most animals are invertebrates, and most of those are insects.
the phylogenetic relationships between species of different phyla
The kingdom Animalia has the greatest number of species.
the species having spinal cord are vertebrates
Species within the class Cephalaspidomorphi, which includes the lampreys, comprise the smallest number of species among vertebrates, with around 38 recognized species.
Insects are the organisms with the greatest number of species, with estimates ranging from 2 to 30 million species. Other diverse groups include bacteria and fungi.
The insects, of which about one million species are known. This is about half of the total number of species known.
Mammals have only between 4000 and 5000 known species of mammals that are vertebrates. The largest group would be Osteichthyes (or bony fish) which has an astonishing amount that adds up to roughly 29,000 species known to man.
Australia
The phylum includes the greatest number of species.
The vertebrates, also know as Chordata have five distinct kinds:1) Pisces2) Ambhibia3) Reptilia4) Aves5) Mammalia
Yes, most fish species have backbones, therefore are vertebrates.
All birds, regardless of species, are vertebrates
Insects have the greatest number of different species. There are literally millions of species of beetles.