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They have existed since the time of the dinosaurs but today, sturgeons are under grave threat as they are overfished, writes SANJIDA O#8217;CONNELL.
Horseshoe have been around for more than 200 million years - they predate flying insects, dinosaurs and humans - but scientists know little about them. That is changing, now that the species is playing critical roles in assuring biomedical safety and in a major environmental dispute.