the zebra
Jawless fish - the earliest known vertebrate was the Myllokunmingia.
The Earliest known people were Ciboney
The earliest known people in the Caribbean are the Taino indians
The earliest known language of the Hebrews was early Biblical Hebrew (עברית).
Probably the skin of an animal.
The earliest form of exchange was known as barter
Yes, the earliest known horse-ancestor, Hyracotherium or Eohippus, has been dated back to the Eocene, around 60 million years ago. This is only five million years after the extinction of the dinosaurs, making horses one of the earliest known distinct family of mammals.
Trepanation may be among the earliest treatments.
china
The earliest known Mexican civilization is the olmec
Where was earliest known writings about the circulatory system found?Read more: Where_was_earliest_known_writings_about_the_circulatory_system_found
Where was earliest known writings about the circulatory system found?Read more: Where_was_earliest_known_writings_about_the_circulatory_system_found