Ctenopterus

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Ctenopterus
Temporal range: Silurian
The Eurypterida of New York plate 49.jpg
Restoration and fossils
Scientific classification e
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Merostomata
Order: Eurypterida
Superfamily: Stylonuroidea
Family: Stylonuridae
Genus: Ctenopterus
Clarke & Ruedemann, 1912
Type species
Ctenopterus cestrotus
(Clarke, 1907)

Ctenopterus is a genus of prehistoric eurypterid of the Family Stylonuridae. It contains only one species.

Description[edit]

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.[1]

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 date from the Silurian to the Devonian periods.[2]

Species[edit]

  • Ctenopterus Clarke & Ruedemann, 1912
    • Ctenopterus cestrotus (Clarke, 1907) — Silurian, USA

References[edit]

  1. ^ Størmer, L 1955. Merostomata. Treatise on Invertebrate Paleontology, Part P Arthropoda 2, Chelicerata, P36.
  2. ^ Størmer, L 1955. Merostomata. Treatise on Invertebrate Paleontology, Part P Arthropoda 2, Chelicerata, P38.

See also[edit]