Idiognathoides

{{Short description|Extinct genus of jawless fishes}}

{{Italic title}}

{{taxobox

| fossil_range = {{fossil range|Bashkirian|Moscovian}}

| regnum = Animalia

| phylum = Chordata

| classis = †Conodonta

| ordo =

| familia =

| genus = †Idiognathoides

| genus_authority = Harris and Hollingsworth, 1933New Pennsylvanian conodonts from Oklahoma. RW Harris and RV Hollingsworth, American Journal of Science, March 1933, series 5, volume 25, no. 147, pages 193-204, {{doi|10.2475/ajs.s5-25.147.193}}

| subdivision_ranks = Species

| subdivision =

• †Idiognathoides luokunensis
• †Idiognathoides postsulcatus
• †Idiognathoides sinuatus (syn. I. sinuata)
• †Idiognathoides sulcata

| synonyms =

}}

Idiognathoides is an extinct genus of conodonts.

Glen K. Merrill stated in 1963 that "conodont workers have considered Idiognathoides to be a junior synonym of Polygnathodella but it now proves to be a junior synonym of Cavusgnathus. Polygnathodella and Cavusgnathus are shown to form a transitional series."Polygnathodella Harlton, 1933, or Idiognathoides Harris and Hollingsworth, 1933? Glen K. Merrill, Journal of Paleontology, March 1963, volume 37, issue 2 ([http://jpaleontol.geoscienceworld.org/content/37/2/504.abstract abstract])