Earliest sea scorpion from China found in end-Ordovician Anji Biota in Zhejiang
n. gen. n. sp., is described from the uppermost Ordovician Wenchang Formation of Anji County, Zhejiang Province, South China. It is the earliest record of eurypterids in China and likely the oldest representative of the Adelophthalmidae.
The species, represented by a single specimen, is diagnosed by a ventrally preserved prosoma with a parabolic carapace,-type prosomal appendages, a short vase-shaped metastoma, and a three-segmented type A genital appendage. The specimen is preserved, together with diverse sponges, graptolites and occasional nautiloids, in a 10 m thick shale of marine deep-water setting.
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