Prototaxites, an extinct organism from the Devonian period, has been thought to be a fungus since its first fossil was ...

Raunkiaer (1934) classified plant life forms based on traits that varied with climate. One such system was based on the location of the perennating organ (Table 1). These are tissues that give ...

In a world that looked nothing like today’s, long before the rise of the dinosaurs or even the first trees, giant living ...

fill an approximately 25-million-year gap in knowledge by reconciling the molecular clock—or pace of evolution—with the fossil spore record—the physical evidence of early plant life gathered by ...