Mammals first appear in the fossil record of the Mesozoic Era.
First, you need to prospect it, than you need to mine for it. Minerals can appear in caves.
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.
Mammals actually first came into existence about 220 million years ago, which is about 155 million years before the dinosaurs went extinct, and only about 10 million years after they themselves first evolved. So mammals actually lived alongside the dinosaurs, though played a much smaller role.
The first cells appeared on Earth approximately 3.5 billion years ago during the Archean Eon. These cells are believed to be simple, single-celled prokaryotes.
Stromatolites first appeared on Earth around 3.5 billion years ago. These structures are formed by the activity of microbial communities, primarily cyanobacteria, and are some of the earliest known evidence of life on our planet.
resembled dogs and cats
250 b.c. .
The first mammals appeared during the Cretaceous Period.
The first true mammals appeared on Earth around 200 million years ago, in the late Triassic period. However, these mammals would remain small and relatively insignificant due to the dominance of the dinosaurs. Only when they died out 65 million years ago did mammals grow and diversify to become the ones we see today. The first modern humans (Homo sapiens sapiens) evolved around 200,000 years ago.
yes
A very long time ago.
Chick or the egg!
In someones pants??
Archaeologists and Paleontologists were the first to uncover America.
well the first thing was algae...and formed from there on
The Cenozoic era at about 65 million years ago. The Paleogene period.
bacteria