First something has been divided into phylums - one group. But that wasn't enough, There were still things in that group which needed to be further sorted, so a sub-phylum was created. Let's say you have one group - cars. That's your phylum. Then you have sports cars, that's a sub-phylum.
According to the fossil records, the modern humans did appear on earth more than 130,000 years ago.
No, the highest level is kingdom.
Not sure what era but fossils of cats were found that dated back to the Eocene period. Cats came around in the 19th century.
1957
yes
Phylum Chordata first appeared over 500 million years ago during the Cambrian period in the early Paleozoic era. It includes vertebrates such as fish, amphibians, reptiles, birds, and mammals, making it one of the most diverse and successful groups of animals on Earth.
Chick or the egg!
In someones pants??
well the first thing was algae...and formed from there on
bacteria
First things first: there is no such thing as an "ecological phylum". A phylum is a taxonomic term. Horses are in the Phylum Chordata, and the Subphylum Vertebrata. They are in the Class Mammalia.
Read your science book chapter . It is on the first page.
the animals come on earth because god put them there
First things first: there is no such thing as an "ecological phylum". A phylum is a taxonomic term. Horses are in the Phylum Chordata, and the Subphylum Vertebrata. They are in the Class Mammalia.
About 475 million years ago
about 236,00 years ago.