they are the oldest ancestors
Heaven.
The answer is long lost to prehistory; presumably when our primitive ancestors learned how to build and maintain a fire.
A primitive trait is a characteristic (if regarding to humans) of a human body/personality that has not developed. For example, toe nails (we keep them as a physical burden from our ancestors, Great Apes).
If our immediate ancestors were happier than us it was probably because they got to spent more time with their families. If primitive man was happier than people living today, it was because they did not know any other way to live.
modded can answer it
Our primitive ancestors using their 10 fingers and 10 toes for counting resulted in the current decimal system which is used everywhere.
The platypus species is very old, so it still has some of the early "primitive" traits of the reptile ancestors despite being considered a mammal.
An aboriginal person is one whose ancestors have lived in a particular place since before written history.
The word 'primitive' is a singular, common noun; a word for an artist who produces very simple works of art; the works of such an artist; a person belonging to a preliterate, nonindustrial society or culture.A noun functions as the subject of a sentence or clause, and as the object of a verb or a preposition. Examples:subject of a sentence: A primitive in a prehistoric society used many skills, even forms of art.subject of a clause: "Plowing", a primitive painted by Grandma Moses, was the main feature of the gallery.object of the verb: We bought a primitive by an unknown sculptor.object of the preposition: The auction price went very high for a primitive.When followed by a noun, the word 'primitive' is an adjective a primitive society, a primitive artist.
Chordates are the common ancestors of fish and sharks. They include lampreys and other types of primitive fish species that live in the sea.
Cyanobacteria > Red Algae > Green Algae > Land Plants
Another name for cave man is Neanderthal or prehistoric human. They are ancient human ancestors who lived in caves and were known for their primitive way of life.