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Pterygotus is an extinct genus of giant predatory eurypterid, a group of extinct aquatic arthropods.Fossils of Pterygotus have been discovered in deposits ranging in age from Middle Silurian to Late Devonian, and have been referred to several different species.
Pterygotidae (the name deriving from the type genus Pterygotus, meaning "winged one") is a family of eurypterids, an extinct group of aquatic arthropods.They were members of the superfamily Pterygotioidea.
Pterygotioidea (the name deriving from the type genus Pterygotus, meaning "winged one") is a superfamily of eurypterids, an extinct group of aquatic arthropods. Pterygotioids were the most derived members of the infraorder Diploperculata and the sister group of the adelophthalmoid eurypterids.
A majority of fossils are from fossil sites in North America and Europe because the group lived primarily in the waters around and within the ancient supercontinent of Euramerica. Only a handful of eurypterid groups spread beyond the confines of Euramerica and a few genera, such as Adelophthalmus and Pterygotus , achieved a cosmopolitan ...
The type specimen of A. cummingsi (a coxa, left) and the type specimen of "Pterygotus buffaloensis" (an appendage including the coxa and part of a chelae, right).. The earliest species of Acutiramus to be named was A. macropthalmus (as a species of Pterygotus, Pterygotus macrophthalmus) in 1859.
Restoration of H. socialis. Hughmilleria is the most basal (primitive) known member of the Pterygotioidea. [1] It was a small-sized eurypterid, with the largest specimen measuring 20 cm (8 in), being surpassed by other members of its superfamily, such as Slimonia acuminata, which measured 100 cm (39 in) in length, and Pterygotus grandidentatus, which could reach 1.75 meters (5 ft 8 in). [2]
The earliest eurypterid reconstruction; a figure of Eurypterus remipes by James E. De Kay (1825).. This timeline of eurypterid research is a chronologically ordered list of important fossil discoveries, controversies of interpretation, and taxonomic revisions of eurypterids, a group of extinct aquatic arthropods closely related to modern arachnids and horseshoe crabs that lived during the ...
The closest thing is found contained in the regularly updated Summary list of fossil spiders and their relatives in the World Spider Catalog. The vast majority of the content of the list below, including the valid genera, preoccupied names, junior synonyms, taxonomical classifications and sites of discovery, is based upon the 2018 edition of ...