Caloceras

{{Short description|Genus of molluscs (fossil)}}

{{Automatic taxobox

|fossil_range = {{fossil range|Hettangian|ref={{cite journal|last=Sepkoski |first=Jack |title=A compendium of fossil marine animal genera (Cephalopoda entry) | journal=Bulletins of American Paleontology |volume=363 |pages=1–560 | year=2002 | url=http://strata.geology.wisc.edu/jack/showgenera.php?taxon=231&rank=class |accessdate=2017-10-18 |url-status=dead | archiveurl=https://web.archive.org/web/20160225225905/http://strata.geology.wisc.edu/jack/showgenera.php?taxon=231&rank=class | archivedate=2016-02-25 }}}}

|image = Caloceras Musée des Confluences 18 10 2015 1.jpg

|image_caption = Caloceras johnstoni displaying ammolite iridescence, Jurassic, Musée des Confluences

|taxon = Caloceras

|authority = Hyatt, 1871

|subdivision_ranks = Species

|subdivision_ref = {{cite web | title= Paleobiology Database - Caloceras |author-link =| year = | url = https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=14665 | access-date = 17 December 2021 }}

|subdivision = None cataloged

}}

Caloceras is an extinct genus of cephalopod belonging to the ammonite subclass.