Fossil Leaf, Glendive Montana Extreme Animals Alive The opening essay focuses on

The opening essay focuses on bird behaviors—the weird

Crystals form through repeated episodes of evaporation

scientific findings and recent developments in our understanding of how they live

Ammonites were predatory cephalopod mollusks that resembled squids with spiral shells

Since these candles are poured by hand

Fossil Leaf, Glendive Montana Extreme Animals Alive The opening essay focuses onDavidia antiqua Fort Union Formation Glendive, Montana Paleocene Fort Union Formation leaf fossils from the Paleocene epoch (approx. 60 million years old) are commonly and naturally brown, ranging from dark brown to reddish orange. These fossils are usually preserved as iron stained impressions or carbonizations in shale or siltstone, creating a high contrast brown on gray appearance.