Wodnika

{{Short description|Extinct genus of sharks}}

{{More citations needed|date=October 2008}}

{{Automatic taxobox

| fossil_range = {{Fossil range|259.0|215.97}}

| image = Wodnika striatula.jpg

| image_alt = "Wodnika striatula"

| image_caption = Wodnika striatula

| display_parents = 2

| taxon = Wodnika

| authority = Münster 1843G. Münster. 1843. Nachtrag zu der Beschreibung einiger merkwürdigen Fische aus den Kupferschiefern. Beiträge zur Petrefacten-Kunde 6:47-52

| synonyms = *{{extinct}}Radamas Münster 1843

| synonyms_ref = {{cite web |title=†Wodnika Münster 1843 (elasmobranch) |url=https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=34520 |website=FossilWorks |access-date=17 December 2021 |language=en }}

| type_species =

| type_species_authority =

| subdivision_ranks = Species

| subdivision =

• Wodnika althausi
• Wodnika ocoyae
• Wodnika striatula

}}

Wodnika is an extinct genus of ctenacanth which lived in the Late Permian period in the present area of Germany and Russia. It measured about 1 m (3.2 ft) in length and its tail shape indicates it was probably a good swimmer. Internally, the cartilage skeleton is preserved on the fossil, which is fairly rare for fossilized shark-like chondrichthyans.{{cite web |url=http://www.nhm.ac.uk/about-us/news/2008/july/rare-british-shark-fossil-joins-collection18285.html |title=Rare British shark fossil joins collection {{!}} Natural History Museum |website=www.nhm.ac.uk |url-status=dead |archive-url=https://web.archive.org/web/20100602143308/http://www.nhm.ac.uk/about-us/news/2008/july/rare-british-shark-fossil-joins-collection18285.html |archive-date=2010-06-02}}