The Aalenian (pronounced ah-LEE-nee-un) refers to a geological period that lasted from approximately 174.7 million years ago to 170.9 million years ago. It falls within the Middle Jurassic Epoch and sits between the Toarcian and Bajocian stages. The term “Aalenian” primarily relates to geology and paleontology. Here’s information on various aspects: Aalenian Meaning and Definition: … Read more