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Merostomata



*†Order Eurypterida *Order Xiphosura Merostomata is a class of marine arthropods which includes horseshoe crabs and eurypterids. It includes only four living species. ==Reference== http://www.earthlife.net/chelicerata/merostomata.html Arthropods

Merostomata



''It is believed that they may have evolved from the trilobites or annelids (segmented worms), and that they themselves are the ancestors of the Arachnida (spiders).'' I dropped this. Very few believe that the Merostomata themselves gave rise to the Arachnids, only that their ancestors are related, which is given away by the two making up the Chelicerata. The same comment applies to the relationship between the Merostomata and trilobites, and ''all'' arthropods are typically supposed to have arisen one way or another from annelids.


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Words begining with Merostomata:

Merostomata
Merostomata


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