While many questions remain about Keurbos susanae, this fossil stands out as one of the most astonishing examples of ...

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 ...

A 444-million-year-old fossil named "Sue" preserves internal organs of Keurbos susanae, raising questions about arthropod ...

Detail images of fossils from the Ordovician Period outcrop on Anticosti Island, Quebec, Canada. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to ...

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The earliest fossil evidence for sharks or their ancestors are a few scales dating to 450 million years ago, during the Late Ordovician Period. “Shark-like scales from the Late Ordovician have been ...

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 ...

However, by the early Ordovician period, Megacheirans were in decline, making L. edgecombei one of the last surviving species ...

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 ...

POLARIS has long helped mariners find their way through our planet's seas and oceans by pointing the way north.