1.According to the diagram, trilobites assumed to be the oldest organism, it was emerged during Paleozoic era and estimated about 600 million years old.
2.The most recent fossils can be found in Cenozoic era. because they can found in the uppermost layer of the rocks.
3.Yes, Cambrian period is a division of Paleozoic era, according to same paleontologist, there are fragments and traces of mullusk and most of them are invertebrates.
4.HUMANS first appeared during the Pleistocene Epoch which dates back 1.6 million years to 10,000 years ago. Humans in modern from arrived during the Pleistocene Epoch, although human-like creatures appeared in the period just before the Pleistocene, called the Pliocene Epoch which dates back 5 million years ago to 1.6 million years ago.
5.Invertebrates to vertebrates from uni-cellular organisms to multi-cellular organisms.
Answers & Comments
Answer:
1.According to the diagram, trilobites assumed to be the oldest organism, it was emerged during Paleozoic era and estimated about 600 million years old.
2.The most recent fossils can be found in Cenozoic era. because they can found in the uppermost layer of the rocks.
3.Yes, Cambrian period is a division of Paleozoic era, according to same paleontologist, there are fragments and traces of mullusk and most of them are invertebrates.
4.HUMANS first appeared during the Pleistocene Epoch which dates back 1.6 million years to 10,000 years ago. Humans in modern from arrived during the Pleistocene Epoch, although human-like creatures appeared in the period just before the Pleistocene, called the Pliocene Epoch which dates back 5 million years ago to 1.6 million years ago.
5.Invertebrates to vertebrates from uni-cellular organisms to multi-cellular organisms.