Cyclopteris

{{Short description|Extinct genus of ferns}}

{{Italic title}}

{{taxobox

| fossil_range = {{fossil range|360.7|0.012}}

| image = Cyclopteris rhomboidea - Fossils in the Arppeanum - DSC05523.JPG

| image_caption = Cyclopteris rhomboidea - Exhibit in the Arppeanum, Helsinki, Finland.

| regnum = Plantae

| divisio = †Pteridospermatophyta

| ordo = †Medullosales

| familia = †Cyclopteridaceae

| genus = †Cyclopteris

| genus_authority = Brongniart, 1828Prodrome d'une histoire des végétaux fossiles. A Brongniart, 1828

| subdivision_ranks = Species

| subdivision =

• Cyclopteris rhomboidea
  and see text

| synonyms =

}}

Cyclopteris is an extinct genus of seed ferns in the extinct family †Cyclopteridaceae. Species are from the Carboniferous.

• Cyclopteris elegans Lesquereux, 1854New species of fossil plants. Lesquereux, 1854, Boston Journ. of Nat. Hist. VI, 4, page 416 - from the Carboniferous of Pennsylvania, USA
• Cyclopteris elegans Unger, 1858Unger, 1858, Denkschr. K. Akad. d. Wiss., Wien, Math. natw. CI, XI, page 161, tab. 6, fig. 1
• Cyclopteris elegans Achepohl, 1883Das Niederrheinisch-Westfälische Steinkohlengebirge: Atlas der fossilen Fauna und Flora in 42 Blättern, nach Originalen photographirt und 4 lithographirte Blätter, … L Achepohl, 1883, page 116, tab. 35, fig. 5 - from Westphalia, GermanyFossilium Catalogus. II. Plantae. Pars 39. W. Jongmans