Eurypterids (Arthropoda: Chelicerata), normally known as sea scorpions, are an important extinct group of Paleozoic chelicerate arthropods. Researchers led by Profs. ZHANG Haichun, WANG Bo, ZHANG ...
Blue-blooded and armored with 10 spindly legs, horseshoe crabs have perhaps always seemed a bit out of place. First thought to be closely related to crabs, lobsters and other crustaceans, in 1881 ...