is their species still alive?
UNANSWERABLE
please tell me more about jaekelopterus It is a genus of predatory eurypterid, a group of extinct aquatic arthropods.
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Jaekelopterus [SEP] Introduction
Jaekelopterus is a genus of predatory eurypterid, a group of extinct aquatic arthropods. Fossils of "Jaekelopterus" have been discovered in deposits of Early Devonian age, from the Pragian and Emsian stages. There are two known species: the type species "J. rhenaniae" from brackish to fresh water strata in the Rhineland, and "J. howelli" from estuarine strata in Wyoming. The generic name combines the name of German paleontologist Otto Jaekel, who described the type species, and the Greek word πτερόν ("pteron") meaning "wing". Based on the isolated fossil remains of a large chelicera (claw) from the Klerf Formation of Germany, "J.