a large marine arthropod, Limulus polyphemus, of shallow coastal waters of eastern North America and eastern Asia, having both compound and simple eyes, book gills, a stiff tail, and a brown carapace curved like a horseshoe: a living fossil related to the woodlouse.
Horseshoe crabs are marine arthropods of the family Limulidae and order
Xiphosura or Xiphosurida, that live primarily in and around shallow ocean waters
Every May and June, horseshoe crabs emerge from the sea onto the beaches at
Jamaica Bay Park. Female horseshoe crabs arrive on the beaches to lay their ...
Ancestors of horseshoe crabs date back over 450 million years--long before the
age of the dinosaurs.
Sep 21, 2015 ... This makes it the world's oldest-known horseshoe crab. Four species are with us
today, all of which closely resemble their long-extinct ...
Learn about the biology, range and behaviors of the horseshoe crab.
New York Horseshoe Crab Cornell Cooperative Extension.
Oct 9, 2013 ... Rumors of an alien creature killed in Chelyabinsk Russia spread all over the
news. It was no alien but a horseshoe crab, a prehistoric living ...
A comprehensive exploration of horseshoe crab natural history, anatomy and
conservation: contains research and educational material, plus collections of ...