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Eurypterid trackways have been referred to several ichnogenera, most notably Palmichnium (defined as a series of four tracks often with an associated drag mark in the mid-line), [24] wherein the holotype of the ichnospecies P. kosinkiorum preserves the largest eurypterid footprints known to date with the found tracks each being about 7.6 ...
Eurypteridae is an extinct family of eurypterids that lived in the Silurian and Devonian periods. The family is one of three families contained in the superfamily Eurypteroidea (along with Dolichopteridae and Strobilopteridae), which in turn is one of the superfamilies classified as part of the suborder Eurypterina. [1]
The largest specimens of Campylocephalus suggests a size of 140 centimetres (4.6 feet) and at 180–200 centimetres (5.9–6.6 ft), Hibbertopterus scouleri was the largest eurypterid in the entire stylonurine suborder. [2]
Eurypterus, the most commonly found eurypterid fossil and the first eurypterid genus to be described. This list of eurypterid genera is a comprehensive listing of all genera that have ever been included in the order Eurypterida, excluding purely vernacular terms.
Order Eurypterida Burmeister, 1843. Suborder Eurypterina Burmeister, 1845. Superfamily Eurypteroidea Burmeister, 1845. Genus Paraeurypterus Lamsdell, Hoşgör ...
The closest sister group of the Pterygotioidea, Adelophthalmoidea, also contains a large amount of species, over 40, and is the second most diverse eurypterid superfamily. [ 18 ] The cladogram below is simplified from 2007 study by O. Erik Tetlie, showcasing the position of the pterygotioids within the suborder Eurypterina. [ 18 ]
Adelophthalmus is a genus of eurypterid, an extinct group of aquatic arthropods.Fossils of Adelophthalmus have been discovered in deposits ranging in age from the Early Devonian to the Early Permian, which makes it the longest lived of all known eurypterid genera, with a total temporal range of over 120 million years.
Mycteroptidae are a family of eurypterids, a group of extinct chelicerate arthropods commonly known as "sea scorpions". The family is one of three families contained in the superfamily Mycteropoidea (along with Hibbertopteridae and Drepanopteridae), which in turn is one of four superfamilies classified as part of the suborder Stylonurina.