3 min read During the Ordovician period, part of the Paleozoic era ... known mainly from the tiny fossil teeth they left behind. The few complete fossils that have been found suggest they were ...

The earliest fossil evidence for sharks or their ancestors are a few scales dating to 450 million years ago, during the Late Ordovician Period. Emma Bernard, a curator of fossil fish at the Museum, ...

The fossils that these layers contain are world-famous for the details that they record about life on Earth during the Late Ordovician Period. Besides preserving pieces of Earth's history, limestone ...

These changes, and their resulting geographic features and fossils, are interesting to scientists and non-scientists alike. Scientists use the evidence recorded within rocks throughout geologic time ...

The oldest echinoids come from the Late Ordovician Period and are approximately 450 million years old ... Echinoids remained only a very minor element of the benthos throughout the Palaeozoic and are ...

One of the world's most important fossil deposits has been ... previous examples are from the Cambrian period, but Castle Bank dates from the middle Ordovician, some 50 million years later.

The Ordovician, Silurian and Devonian have their ... the Triassic was the most important geological period of all. It was the moment of life’s reset, a festival of evolution which prepared ...