Calamostoma

{{Short description|Extinct genus of fishes}}

{{Speciesbox

| fossil_range =

{{fossilrange|50|49|Early Eocene{{cite journal|last=Sepkoski |first=Jack |title=A compendium of fossil marine animal genera |journal=Bulletins of American Paleontology |volume=364 |page=560 |year=2002 |url=http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=611&rank=class |accessdate=2009-02-27 |url-status=dead |archiveurl=https://web.archive.org/web/20090220223520/http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=611&rank=class |archivedate=2009-02-20 }}}}

| image =Calamostoma breviculum.jpg

| image_caption =Calamostoma lesiniforme

| taxon = Calamostoma lesiniforme

| display_parents = 2

| parent_authority = Agassiz, 1833

| authority = (Volta, 1796)

| synonyms =

• {{extinct}}C. breviculum (Blainville, 1818)

}}

Calamostoma is an extinct relative of the ghost pipefish that lived during the early Eocene.{{Cite web |title=PBDB Taxon |url=https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=35855 |access-date=2024-04-05 |website=paleobiodb.org}} It contains a single species, C. lesiniforme (sometimes erroneously referred to as C. breviculum) from the famous Monte Bolca site of Italy. It is one of the few known fossil ghost pipefishes. Calamostoma and the other Bolca solenostomid, Solenorhynchus, are both placed in the extinct subfamily Solenorhynchinae.{{Cite journal |last=Bannikov |first=Alexandre F. |last2=Carnevale |first2=Giorgio |date=2017 |title=Eocene ghost pipefishes (Teleostei, Solenostomidae) from Monte Bolca, Italy |url=https://iris.unito.it/retrieve/handle/2318/1661157/392851/Bannikov%20%26%20Carnevale%20-%20Solenostomidae%20Bolca.pdf |journal=Bollettino della Società Paleontologica Italiana |volume=56 |issue=3 |pages=319-331}}{{Cite journal |last1=Carnevale |first1=G. |last2=Bannikov |first2=Alexandre F. |last3=Marramà |first3=G. |last4=Tyler |first4=James C. |last5=Zorzin. |first5=R. |date=2014 |title=The Bolca Fossil-Lagerstätte: A window into the Eocene World. 5. The Pesciara- Monte Postale Fossil-Lagerstätte: 2. Fishes and other vertebrates. Excursion guide |url=https://iris.unito.it/bitstream/2318/149338/1/Carnevale%20et%20al%202014%20The%20Pesciara%20F-L.%20Fishes%20and%20other%20vertebrates2.pdf |journal=Rendiconti della Società Paleontologica Italiana |volume=4 |issue=1 |pages=i–xxvii |hdl=10088/25678}}