Did the first life forms on earth live on land?

Since there have been scientific discoveries of marine Biology thousands of miles inland and that the entire planet was mostly ocean at one stage, one would assume the organisms started in the ocean, but before any oceans were formed, there was mainly molten land, where the organisms could have began. They may have hitch-hiked from passing or plummeting meteorite debris. That would pose many more questions now, won't it? Are any of the organisms indigenous to the planet or are they all from the massive expanse of space?