Lower Devonian Series
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The Lower Devonian Series is a subdivision of the Devonian Period, a geological interval spanning from approximately 419.2 to 358.9 million years ago. This series comprises the Lochkovian, Pragian, and Emsian stages. During this time, the continents of Laurentia and Baltica united to form Laurussia, leading to significant geological events like the Caledonian orogeny, which created a mountain chain across parts of Europe and North America.123
The Devonian Period is known as the "Age of Fishes" due to the remarkable diversification of fish species in both marine and freshwater environments. The Lower Devonian saw the emergence of jawed vertebrates, known as gnathostomes, including armored placoderms. Terrestrial life also began to flourish, with the development of forests and the early colonization of land by vertebrates. Marine invertebrates, such as corals, brachiopods, and ammonites, were also abundant.4135
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Devonian PeriodSouthern HemisphereThe marine Lower Devonian shows some affinity with the Bokkeveld in South Africa, which in turn has strong links with South America. No Devonian strata are known in Africa between the Bokkeveld and sections in Ghana and northwestern Africa.
Read MoreThe marine Lower Devonian shows some affinity with the Bokkeveld in South Africa, which in turn has strong links with South America. No Devonian strata are known in Africa between the Bokkeveld and sections in Ghana and northwestern Africa.
Read More- Devonian PeriodMajor subdivisions of the Devonian System
…System are divided into the Lower Devonian Series (419.2 million–393.3 million years ago; comprising the Lochkovian, Pragian, and Emsian stages), the Middle Devonian Series (393.3 million–382.7 million years ago; comprising the Eifelian and
Read More…System are divided into the Lower Devonian Series (419.2 million–393.3 million years ago; comprising the Lochkovian, Pragian, and Emsian stages), the Middle Devonian Series (393.3 million–382.7 million years ago; comprising the Eifelian and
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