Merostomoidea

Merostomoidea
Temporal range: Cambrian
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata?
Class: Merostomoidea
Størmer, 1944
Orders

Merostomoidea is a paraphyletic group of fossil arthropods. They have been described as a transitional form between trilobites and true chelicerates.

Sources

    http://www.palaeos.com/Invertebrates/Arthropods/Arachnomorpha.html#Merostomoidea

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