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Trigonotarbids are a group of Palaeozoic arachnids, best known from Coal Measures sites in Europe and North America. Here, we review previous work on their higher systematics and redescribe Trigonotarbus johnsoni Pocock, 1911, from the Coseley Lagerstätte, UK, on the basis of both hand specimens and X‐ray microtomography reconstruction. This is a historically important species – being the eponymous...
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