Hemicidaridae

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

{{Automatic taxobox

| name = Hemicidaridae

| fossil_range = {{fossilrange|189.6|112.6|Jurassic- Cretaceous}}

| image = Hemicidaridae - Asterocidaris species.JPG

| image_caption = Fossil of Asterocidaris species

| taxon = Hemicidaridae

| authority = Wright, 1857

| synonyms =

}}

File:Pseudocidaris spine Jurassic.jpg spine; Matmor Formation (Middle Jurassic) of Makhtesh Gadol, Israel.]]

Hemicidaridae is a family of extinct sea urchins characterized by large, massive, club-shaped spines.

These epifaunal grazer-deposit feeders lived in Jurassic and Cretaceous ages (from 189.6 to 112.6 Ma).{{cite web |url=https://www.fossilworks.org |title=Fossilworks: Gateway to the Paleobiology Database |publisher=fossilworks.org |access-date=2015-05-10 |archive-date=2022-03-25 |archive-url=https://web.archive.org/web/20220325060448/http://www.fossilworks.org/cgi-bin/bridge.pl?action=home |url-status=live }}