Horseshoe Crab Fossil

This is a shell of a horseshoe crab! This is a great item for the study or classroom!

 

* Horseshoe Crab *

Horseshoe crabs are marine and brackish water arthropods of the family Limulidae, suborder Xiphosurida, and order Xiphosura. Their popular name is a misnomer, as they are not true crabs, nor even crustaceans, as crabs are, but a different order of arthropod.

Horseshoe crabs live primarily in and around shallow coastal waters on soft, sandy or muddy bottoms. They tend to spawn in the intertidal zone at spring high tides. They are commonly eaten in Asia, and used as fishing bait, in fertilizer and in science (especially Limulus amebocyte lysate). In recent years, population declines have occurred as a consequence of coastal habitat destruction and overharvesting. Tetrodotoxin may be present in one horseshoe crab species, Carcinoscorpius rotundicauda.

Given their origin 244 million years ago, horseshoe crabs are considered living fossils.

 

Like other animals, the horseshoe crab has an immune and blood coagulation system that protects it against infection. Inside the horseshoe crab’s blood cell (called the amebocyte) are the protiens of its blood clotting system.

 

The horseshoe crab protects it’s self in the water by burrowing deep into the sand to hide. It also usues it’s tail to scare away predators. The shell on top protects the fragile insides, on the underneath of the crab. However, if it is flipped over on it’s back, it will use it’s telson “tail” by digging it into the sand and flipping itself upright.

 

Thanks to their armoured casing, horseshoe crabs have few natural predators and are primarily hunted by sharks and sea turtles. Humans also widely hunt the horseshoe crab around the world, along with coastal birds that pick the horseshoe crabs out of the shallows.

Horseshoe Crab Fossil

SKU: RRHORCRB18
$10.00Price
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      The Smoky Mountain Relic Room stands behind the items we sell with a limnited lifetime guarantee. We will exchange any item for store credit if the item sold is found by a certified authenticator not to be the authentic artifact, fossil, meteorite or mineral that we advertised it as being. A letter, specific to the artifact, fossil, meteorite or mineral in question, from a certified authenticator (in the business under the occupation specific to the item in question) must be brought in with the item for the return to be acceptable. This guarantee is for the lifetime of the initial purchaser only. See the Relic Room Manager, downstairs inside Smoky Mountain Knife Works, for more information. Original receipt required for exchanges.

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