No! The earliest fossils of plants were just traces of algae that lived approximately 3,000 million years ago and are thought to be the first primitive relatives of all plant life on earth.
To give an idea of the time scale - here is a picture that explains the evolution of the different types of plants and when they first appeared on earth.
|The Plant Time Line|
|Basic Plant Kingdom|
This was 225 million years ago, and they are the relatives of our conifers (pine trees etc) and cycads - sometimes called cone bearing plants. This period lasted some 90 million years until the glorious flowering plants arrived for the first time and now is the largest plant group on earth. They cover trees, shrubs, grasses, vines, weeds and nearly every plant we normally see from day to day.
The development of each of the above groups will be discussed separately. Overall they are nearly 400,000 different plant species on earth the have been discovered so far and growing rapidly each year.