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Dating the earliest Myriapods.
[sciencythoughts.blogspot.com]
Understanding how organisms colonised the land, is crucial to clarify extant biodiversity and biological adaptation. But, evaluating the rate and pattern of land colonisation requires precise dating of the fossil of early land biotas and reconciling them with evolutionary divergence based on morphology and molecular clocks. The frequent striking inconsistency between the ages of fossils and their phylogenies limits our understanding of macroevolution, and it reduces confidence in phylogenetic inference: this is especially the case for the first land Animals. Arthropoda (Insects, Spiders, Centipedes and their allies) were the first, and are the largest group of land Animals in both numbers and biomass. The first fossil land Arthropod-Plant assemblages are rare and only found in Late Silurian (about 425 million years old) to Early Devonian (about 410 million years old) equatorial terrestrial and freshwater sediments within and marginal to the ancient Caledonian mountains which stretched from New York to Germany. The earliest fossil land Arthropods are Myriapods (Millipedes and Centipedes) from the latest Silurian (about 425 million years old) of Scotland and Wales.

JoeB 6 Dec 1
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I have never dated a Myriapod. But I once dated a lady named Miriam

Krish55 Level 8 Dec 1, 2020

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