The Merostomata includes two distinct groups of marine organisms, the eurypterids (an extinct group that lived 200 to 500 million years ago) and the horseshoe crabs. The horseshoe crabs are also an ancient group; only 4 or 5 species (depending on who is counting) exist today.
The Amazing Horseshoe
Information on these crabs, family Limulidae, their anatomy, life cycle, ecological niche, spawning and medical uses.
The Horseshoe Crab - Limulus polyphemus
Promotes public awareness of the four remaining species. Natural history, conservation, medical uses, education, sightings, stories, images, glossary, and bibliography.
The Horseshoe Crab - Limulus polyphemus
Brief profile of species biology and ongoing research, with a photo.
Horseshoe Crab: Limulus polyphemus
Photographs and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation.
Horseshoe Crabs: The Ancient Mariner
Information on these crabs, which have evolved little in the last 250 million years, their behavior and mating ritual.
It's all about the Horseshoe Crab
Videos, pictures and informative articles for the preservation and understanding of the American horseshoe crab.
Merostomata
Brief description of the class, from the Animal Diversity Web.
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Last update:
May 27, 2015 at 12:54:10 UTC
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