Stylonurids, which lived from the Ordovician to Lower Permian periods, were small to very large forms with scales developing into tubercules and knobs. The prosoma (head) exhibited variable shape, with arcuate compound eyes located subcentrally, or anteriorly. Their abdomens were slender. Their walking legs were long and powerful, sometimes characterized by spines. Most genera did not have swimming legs.[2]
Ctenopterus is distinguished by its prosoma (head), which narrows towards the front. All of its legs are walking legs; the second and third pairs are strongly developed, with a double row of numerous flat spines; the last pair is long, without spines. Ctenopterus dates from the Silurian period.[3]
ctenopterus, genus, prehistoric, eurypterid, family, stylonuridae, contains, only, species, cestrotus, from, early, silurian, otisville, york, united, states, temporal, range, early, silurian, preꞒ, nrestoration, fossilsscientific, classificationdomain, eukary. Ctenopterus is a genus of prehistoric eurypterid of the family Stylonuridae It contains only one species Ctenopterus cestrotus from the Early Silurian of Otisville New York United States 1 CtenopterusTemporal range Early Silurian PreꞒ Ꞓ O S D C P T J K Pg NRestoration and fossilsScientific classificationDomain EukaryotaKingdom AnimaliaPhylum ArthropodaSubphylum ChelicerataOrder EurypteridaFamily StylonuridaeSubfamily LaurieipterinaeGenus CtenopterusClarke amp Ruedemann 1912Species C cestrotusBinomial name Ctenopterus cestrotus Clarke 1907 Description edit nbsp Elements of Ctenopterus 1 7 Stylonurids which lived from the Ordovician to Lower Permian periods were small to very large forms with scales developing into tubercules and knobs The prosoma head exhibited variable shape with arcuate compound eyes located subcentrally or anteriorly Their abdomens were slender Their walking legs were long and powerful sometimes characterized by spines Most genera did not have swimming legs 2 Ctenopterus is distinguished by its prosoma head which narrows towards the front All of its legs are walking legs the second and third pairs are strongly developed with a double row of numerous flat spines the last pair is long without spines Ctenopterus dates from the Silurian period 3 See also editList of eurypteridsReferences edit Dunlop J A Penney D amp Jekel D 2015 A summary list of fossil spiders and their relatives In World Spider Catalog Natural History Museum Bern online at http wsc nmbe ch version 16 0 http www wsc nmbe ch resources fossils Fossils16 0 pdf PDF Stormer L 1955 Merostomata Treatise on Invertebrate Paleontology Part P Arthropoda 2 Chelicerata P36 Stormer L 1955 Merostomata Treatise on Invertebrate Paleontology Part P Arthropoda 2 Chelicerata P38 nbsp This eurypterid related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Ctenopterus amp oldid 1173173761, wikipedia, wiki, book, books, library,
