Holectypus

{{Short description|Extinct genus of sea urchins}}

{{Automatic taxobox

| fossil_range = {{fossil_range|170.3|89.8}} Bajocian to Turonian

| taxon = Holectypus

| authority = Desor, 1842

}}

Holectypus is an extinct genus of sea urchin. It lived from the Jurassic to the Cretaceous.{{Cite book |last=Clark |first=William Bullock |url=https://www.biodiversitylibrary.org/bibliography/36384 |title=The Mesozoic and Cenozoic Echinodermata of the United States |last2=Clark |first2=William Bullock |last3=Twitchell |first3=M. W. |date=1915 |publisher=Govt. print. off |location=Washington}} Fossils have been found all around the world.{{Cite PBDB|taxon|33095|Holectypus}}