If you looked up 66 million years ago you might have seen, for a split second, a bright light as a mountain-sized asteroid burned through the atmosphere and smashed into Earth. It was springtime and ...

This cross section of a sequoia in Yosemite National Park in California has markers identifying the dates of tree rings. Jared Farmer What and where are the oldest known trees on the planet? If you ...

International Journal of Plant Sciences, Vol. 180, No. 2 (FEBRUARY 2019), pp. 93-127 (35 pages) Premise of research. Small angiosperm fossils are diverse in Early Cretaceous mesofossil floras from ...

The angiosperms are the most recently derived plant group, originating some 160 million years ago and becoming widespread around 120 million years ago. Angiosperm means “enclosed seed,” referring to ...

Machine generated contents note: Preface; 1. Introduction to angiosperms; 2. The nature of the angiosperm fossil record; 3. The environmental context of early angiosperm evolution; 4. Stratigraphic ...

While the extinction affected some flower species, most lineages survived and the catastrophe may have helped them become a dominant form of plant life. By Jack Tamisiea When a mountain-size slab of ...

Diversity and Distributions, Vol. 29, No. 2 (February 2023), pp. 232-243 (12 pages) Aim: Understanding how species' traits and environmental contexts relate to extinction risk is a critical priority ...