Calcarichelys

{{Short description|Extinct genus of turtle}}

{{Automatic taxobox

| taxon = Calcarichelys

| authority = Zangerl, 1953

| type_species = Calcarichelys gemma

| type_species_authority = Zangerl, 1953

| oldest_fossil = Campanian

| youngest_fossil = Maastrichtian

| image = Calcarichelys.jpg

| image_caption = Carapace and plastron, McWane Science Center

}}

Calcarichelys ('spur turtle' or 'thorn turtle'){{Cite book |last1=Zangerl |first1=Rainer |url=https://www.biodiversitylibrary.org/bibliography/5334 |title=The vertebrate fauna of the Selma Formation of Alabama |last2=Museum |first2=Chicago Natural History |date=1953 |publisher=Chicago Natural History Museum |location=[Chicago, Ill.]}} is an extinct genus of protostegid turtle from the Late Cretaceous of the Selma Formation in Alabama, and possibly from Angola.{{Cite web |title=Mindat.org |url=https://www.mindat.org/taxon-4818908.html |access-date=2022-04-22 |website=www.mindat.org}}{{Cite journal |last=Hooks |first=G. E. |date=1998-04-10 |title=Systematic revision of the Protostegidae, with a redescription of Calcarichelys gemma Zangerl, 1953 |url=https://doi.org/10.1080/02724634.1998.10011036 |journal=Journal of Vertebrate Paleontology |volume=18 |issue=1 |pages=85–98 |doi=10.1080/02724634.1998.10011036 |bibcode=1998JVPal..18...85H |issn=0272-4634|url-access=subscription }}{{Cite journal |last1=Mateus |first1=Octávio |last2=Polcyn |first2=Michael |last3=Jacobs |first3=Louis |last4=Araujo |first4=Ricardo |last5=Schulp |first5=A. |last6=Marinheiro |first6=João |last7=Pereira |first7=Bruno |last8=Vineyard |first8=Diana |date=2012-01-01 |title=Cretaceous amniotes from Angola: dinosaurs, pterosaurs, mosasaurs, plesiosaurs, and turtles |url=https://www.researchgate.net/publication/256544485 |journal=V Jornadas Internacionales Sobre Paleontolog'ia de Dinosaurios y Su Entorno}} It contains only one species, C. gemma.{{Cite web |title=Calcarichelys - Encyclopedia of Life |url=https://eol.org/pages/4522548 |access-date=2022-04-22 |website=eol.org}}