An early form of eurypterids (Chelicerata), Archopterus anjiensis n. gen. n. sp., is described
from the uppermost Ordovician Wenchang Formation of Anji County, Zhejiang Province …

Two new eurypterids, a pterygotid Pterygotus wanggaii n. sp. and an adelophthalmoid
Parahughmilleria fuea n. sp., are described from the Early Devonian (Lochkovian) …

Eurypterids constituted an important component of Paleozoic marine ecosystems, but their
fossil record has been mainly reported from North America and Europe, and the evolution of …

Background Eurypterids are a diverse group of chelicerates known from~ 250 species with a
sparse Ordovician record currently comprising 11 species; the oldest fully documented …

Two new eurypterids, a pterygotid Erettopterus qujingensis n. sp., and a slimoniid, Slimonia
sp., are described from the upper Silurian (Pridolian) Yulongsi Formation of Yunnan …

Euchelicerata is a clade of arthropods comprising horseshoe crabs, scorpions, spiders,
mites and ticks, as well as the extinct eurypterids (sea scorpions) and chasmataspidids. The …

Two new specimens of the xiphosuran Kasibelinurus yueya Lamsdell, Xue & Selden, 2013
are described, from the same horizon and locality as the type. The new specimens are …

A new genus and species of eurypterid (Eurypterida: Chelicerata) is described as
Orcanopterus manitoulinensis from the Upper Ordovician Kagawong Submember (Upper …

Houia is a possible annectent form between horseshoe crabs and eurypterids (sea
scorpions). However, fossils are rare, previously only known from a single locality. Here, we …

Euchelicerates were a major component of Palaeozoic faunas, but their basal relationships
are uncertain: it has been suggested that Xiphosura—xiphosurids (horseshoe crabs) and …