Temporal range: 
|Palaeophoneus nuncius fossil from Sweden|
Thorell & Lindström, 1884
Palaeophonus (meaning ancient killer) is the oldest known genus of scorpion. Fossils have been found in Europe. It was virtually identical to modern scorpions. Palaeophonus grew to a lengths of 2.5–3.5 inches (64–89 mm) and would have preyed upon small creatures that lived alongside it, including primitive springtails and millipedes.
- Laurie, M. (2012). "XIX.—On a Silurian Scorpion and some additional Eurypterid Remains from the Pentland Hills". Transactions of the Royal Society of Edinburgh 39 (3): 575. doi:10.1017/S0080456800035109.
- Dunlop, J. A. (2010). "Geological history and phylogeny of Chelicerata". Arthropod Structure & Development 39 (2–3): 124. doi:10.1016/j.asd.2010.01.003.
- Steve Parker (2003). Dinosaurus: the Complete Guide to Dinosaurs. Firefly Books. p. 75. ISBN 978-1-55297-772-9.
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