Appalachignathus

{{Short description|Genus of jawless fishes}}

{{Italic title}}

{{taxobox

| fossil_range = {{fossil_range|Middle Ordovician}}

| regnum = Animalia

| phylum = Chordata

| classis = †Conodonta

| unranked_ordo = †Prioniodontida

| ordo =

| familia = †Rhipidognathidae{{Cite journal |jstor = 1306930|title = Ordovician Rhipidognathid Conodonts from Australia and Iran|journal = Journal of Paleontology|volume = 75|issue = 1|pages = 186–207|last1 = Zhen|first1 = Yong Y.|last2 = Nicoll|first2 = Robert S.|last3 = Percival|first3 = Ian G.|last4 = Hamedi|first4 = Mir Alireza|last5 = Stewart|first5 = Ian|year = 2001|doi = 10.1017/S002233600003198X|s2cid = 232350018}}

| genus = †Appalachignathus

| genus_authority = Bergström at al. 1974

| subdivision_ranks = Species

| subdivision =

• †Appalachignathus delicatulus (type)

| synonyms =

}}

Appalachignathus is a genus of multielement conodonts from the Middle Ordovician of North America.{{Cite journal| jstor = 1303249| pages = 227–235| title = Appalachignathus, a New Multielement Conodont Genus from the Middle Ordovician of North America| journal = Journal of Paleontology| volume = 48| issue = 2| year = 1974 |last1=Bergström| first1 = S. M. |last2=Carnes| first2 = J. B. |last3=Ethington| first3 = R. L. |last4=Votaw| first4 = R. B. |last5=Wigley| first5 = P. B.}}

The elements of Appalachignathus are amongst the first occurrences of the Ozarkodina-type feeding apparatuses.