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Marine fossil specimens unearthed in northern Portugal are filling a gap in understanding evolution during the Middle Ordovician period. A clutch of marine fossil specimens unearthed in northern ...

The Ordovician period offers a detailed window into early marine ecosystems and climatic transitions, with palynology and microfossil biostratigraphy serving as key tools in reconstructing these ...

The once very successful group of marine arthropods called trilobites were hit hard by the Ordovician mass extinction and never fully recovered until going extinct 200 million years later. At the end ...

One of Earth's most consequential bursts of biodiversity—a 30-million-year period of explosive evolutionary changes spawning innumerable new species—may have the most modest of creatures to thank for ...

Subdivision and correlation of the Ordovician System serve as the time scale for constraining the major geological and biological events during the Ordovician Period. Currently a globally unified ...

Today, only the largest planets in the solar system have rings, but a new study suggests Earth may have been a ringed planet in the distant past. Scientists studying the geology of the Ordovician ...

The "Big Five" mass extinctions of the Phanerozoic Eon have long attracted significant attention from the geoscience community and the public. Among them, the Late Ordovician Mass Extinction (LOME) is ...

An unusually well-preserved "Marine Dwarf World" from 462 million years ago was found at Castle Bank, Wales by a team led by the Nanjing Institute of Geology and Palaeontology of the Chinese Academy ...

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