Sites

The Ocean Web - English
URL: http://www.unc.edu/depts/oceanweb/

Sea Turtle Page. Horseshoe Crab Page. Spiny Lobster Page. Web The Ocean Web was created with support from a Chancellor's Instructional Technology Grant from the University of North Carolina at Chapel Hill. Web page developers were Larisa Avens, Larry Boles, and Bill Irwin; project directors were Dr. Ken Lohmann and Dr. Catherine Lohmann. To learn more about these people and their research interests visit the Lohmann Lab Web Page

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Prehistoric Pittsford - English
URL: http://eurypterid.net/

shown in filters: Публикации

Personal educational website accompanying exhibit at Pittsford Community Library. Discovery of new eurypterids by Clifton J. Sarle (1903) in the Pittsford Shale near Rochester, New York.

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Eurypterids eurypterida - English
URL: http://www.eurypterids.net/

Site devoted to eurypterid occurrences, structure, distribution. Mostly New York and Ontario, Canada. Also "Eurypterids of the World" and pages on stratigraphy, sedimentary structures, and links.

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Introduction to the Xiphosura - English
URL: http://www.ucmp.berkeley.edu/arthropoda/chelicerata/xiphosura.html

Horseshoe crabs - photos, information.

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Eurypterida - "Sea scorpions" - English
URL: http://www.ucmp.berkeley.edu/arthropoda/chelicerata/eurypterida.html

The eurypterids were among the largest and most fearsome marine predators of the Paleozoic. While the smallest were only about 10 centimeters, some reached more than two meters (six feet) in length, making them the largest arthropods that ever lived. They arose in the Ordovician, and the last ones went extinct in the Permian. Most have been found in rocks that were laid down in brackish water or freshwater; the earliest groups may have lived in the sea, and some eurypterids may have spent at least short intervals on land.

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Horseshoe Crabs - English
URL: http://www.cyhaus.com/marine/hcrabs.htm

The most common type of horseshoe crab has the scientific classification of Limulus polyphemus.

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Horseshoe Crab - English
URL: http://www.assateague.com/horsesho.html

Although horseshoe crabs look dangerous, they are not. And they are really not crabs at all; they are distant relatives of the spider and are probably descended from the ancient order Eurypterida.

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Merostomata Class - English
URL: http://animaldiversity.ummz.umich.edu/arthropoda/merostomata.html

The Merostomata includes two rather different groups of marine organisms, the eurypterids and the horseshoe crabs. Eurypterids are now extinct; they lived 200 to 500 million years ago. Some were huge, reaching a length of 3 m. Their morphology suggests that they fed on a variety of kinds of foods. Some may have been amphibious, emerging onto land for at least part of their life cycle. The horseshoe crabs are an ancient group, but only 5 species exist today. They feed on small invertebrates. Horseshoe crabs are often used as laboratory animals by physiologists.

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