Assertion: known eurypterid | /r/HasProperty | jaekelopterus
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Source sentences:
text: In addition to fossil finds of large specimens, fossil trackways attributed to the species H. wittebergensis from South Africa indicates an animal around 250 centimetres (8.2 ft) in length (the same size attributed to the largest known eurypterid, Jaekelopterus), though the largest known fossil specimens of the species only appear to have reached lengths of 135 centimetres (4.43 ft).