Several million years later the first mammals appeared. They were nonplacental and proved a speedy failure; none survived. This was an experimental effort to improve mammalian types, but it did not succeed on Urantia.
Close in meaning, found by a language model. A match does not mean the teachings are the same.
Then the third arose, and ruled as the others before, and it also disappeared. So it went with all the wings one after another, as every one ruled, and then disappeared. I saw, and behold, in process of time the wings that followed were set up on the right side, that they might rule also. Some of them ruled, but in a while they disappeared. Some of them also were set up, but didn’t rule.
For creatures of the dry land were turned into creatures of the waters, and creatures that swim moved upon the land.
while as yet he had not made the earth, nor the fields, nor the beginning of the dust of the world.