Merostomata — Reconstruction of Eurypterus (Eurypterida) … Wikipedia
Merostomata — noun used in some classifications; includes the orders Xiphosura and Eurypterida • Syn: ↑class Merostomata • Hypernyms: ↑arthropod • Member Holonyms: ↑Chelicerata, ↑superclass Chelicerata • … Useful english dictionary
Merostomata — Mer o*stom a*ta, prop. n. pl. [NL., fr. Gr. me ros thigh + ?, ?, mouth.] (Zo[ o]l.) A class of Arthropoda, allied to the Crustacea. It includes the trilobites, {Eurypteroidea}, and {Limuloidea}. All are extinct except the horseshoe crabs… … The Collaborative International Dictionary of English
arthropod — /ahr threuh pod /, n. 1. any invertebrate of the phylum Arthropoda, having a segmented body, jointed limbs, and usually a chitinous shell that undergoes moltings, including the insects, spiders and other arachnids, crustaceans, and myriapods. adj … Universalium
Xiphosura — Temporal range: Silurian–Recent … Wikipedia
Dolichopteridae — Temporal range: Silurian–Devonian … Wikipedia
Megalograptidae — Temporal range: Ordovician … Wikipedia
Mycteroptidae — Temporal range: Upper Carboniferous–Permian … Wikipedia
Eurypterida — noun extinct aquatic arthropods of the Paleozoic • Syn: ↑order Eurypterida • Hypernyms: ↑animal order • Member Holonyms: ↑Merostomata, ↑class Merostomata • Member Meronyms: ↑ … Useful english dictionary
Chelicerata — noun spiders; scorpions; horseshoe crabs • Syn: ↑superclass Chelicerata • Hypernyms: ↑class • Member Holonyms: ↑Arthropoda, ↑phylum Arthropoda • Member Meronyms: ↑ … Useful english dictionary