By 1830 Lyell's famous textbook, Principles of Geology, came out. Such was the age of the great creationist geologists!
It was found that certain fossils, now referred to as index fossils, were restricted to a narrow zone of strata.
Older periods which predate the reliable fossil record are defined by absolute age.
Each era on the scale is separated by a major and/or changing event.**If the images and/or text on any of the web pages do not appear evenly spaced and centered on your screen, which commonly occurs with AOL pages, maximize the individual page's window.
But the artists at Abri Blanchard didn't just have an interest in the female form.
They chose a diverse array of artistic subjects, from horses and cats to geometric designs such as rings, according to White and his colleagues.