62:4.4 (707.3) The Primates were more human and less animal than their mid-mammal predecessors. The skeletal proportions of this new species were very similar to those of the primitive human races. The human type of hand and foot had fully developed, and these creatures could walk and even run as well as any of their later-day human descendants. They largely abandoned tree life, though continuing to resort to the treetops as a safety measure at night, for like their earlier ancestors, they were greatly subject to fear. The increased use of their hands did much to develop inherent brain power, but they did not yet possess minds that could really be called human.
62:4.5 (707.4) Although in emotional nature the Primates differed little from their forebears, they exhibited more of a human trend in all of their propensities. They were, indeed, splendid and superior animals, reaching maturity at about ten years of age and having a natural life span of about forty years. That is, they might have lived that long had they died natural deaths, but in those early days very few animals ever died a natural death; the struggle for existence was altogether too intense.
62:4.6 (707.5) And now, after almost nine hundred generations of development, covering about twenty-one thousand years from the origin of the dawn mammals, the Primates
62:4.7 (707.6) Thus it was that the dawn mammals, springing from the North American lemur type, gave origin to the mid-mammals, and these mid-mammals in turn produced the superior Primates, who became the immediate ancestors of the primitive human race. The Primates tribes were the last vital link in the evolution of man, but in less than five thousand years not a single individual of these extraordinary tribes was left. 5. The First Human Beings
62:5.1 (707.7) From the year A.D. 1934 back to the birth of the first two human beings is just 993,419 years.
62:5.2 (707.8) These two remarkable creatures were true human beings. They possessed perfect human thumbs, as had many of their ancestors, while they had just as perfect feet as the present-day human races. They were walkers and runners, not climbers; the grasping function of the big toe was absent, completely absent. When danger drove them to the treetops, they climbed just like the humans of today would. They would climb up the trunk of a tree like a bear and not as would a chimpanzee or a gorilla, swinging up by the branches.
62:5.3 (708.1) These first human beings (and their descendants) reached full maturity at twelve years of age and possessed a potential life span of about seventy-five years.
62:5.4 (708.2) Many new emotions early appeared in these human twins. They experienced admiration for both objects and other beings and exhibited considerable vanity. But the most remarkable advance in emotional development was the sudden appearance of a new group of really human feelings, the worshipful group, embracing awe, reverence, humility, and even a primitive form of gratitude. Fear, joined with ignorance of natural phenomena, is about to give birth to primitive religion.
62:5.5 (708.3) Not only were such human feelings manifested in these primitive humans, but many more highly evolved sentiments were also present in rudimentary form. They were mildly cognizant of pity, shame, and reproach and were acutely conscious of love, hate, and revenge, being also susceptible to marked feelings of jealousy.
62:5.6 (708.4) These first two humans—the twins—were a great trial to their Primates parents. They were so curious and adventurous that they nearly lost their lives on numerous occasions before they were eight years old. As it was, they were rather well scarred up by the time they were twelve.
62:5.7 (708.5) Very early they learned to engage in verbal communication; by the age of ten they had worked out an improved sign and word language of almost half a hundred ideas and had greatly improved and expanded the crude communicative technique of their ancestors. But try as hard as they might, they were able to teach only a few of their new signs and symbols to their parents.
62:5.8 (708.6) When about nine years of age, they journeyed off down the river one bright day and held a momentous conference. Every celestial intelligence stationed on Urantia, including myself, was present as an observer of the transactions of this noontide tryst. On this eventful day they arrived at an understanding to live with and for each other, and this was the first of a series of such agreements which finally culminated in the decision to flee from their inferior animal associates and to journey northward, little knowing that they were thus to found the human race.