Eoaulostomus

{{Short description|Extinct genus of fishes}}

{{Automatic taxobox

| 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/20110723131237/http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=611&rank=class |archivedate=2011-07-23 }}}}

| image = Eoaulostomus bolcensis.jpg

| image_caption = Specimens of E. bolcensis, Museo di Storia Naturale

| taxon = Eoaulostomus

| authority = Blot, 1981

| type_species = {{extinct}}Fistularia bolcensis

| type_species_authority = de Blainville, 1818

| subdivision_ranks = Species

| subdivision = *†E. bolcensis (de Blainville, 1818)

• †E. gracilis Blot, 1981

}}

Eoaulostomus ("dawn Aulostomus") is an extinct genus of marine ray-finned fish, closely related to the modern trumpetfish, that lived during the Eocene. It contains two species, E. bolcensis (de Blainville, 1818) and E. gracilis Blot, 1981, both known from the Early Eocene-aged Monte Bolca site of Italy.{{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/20110723131237/http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=611&rank=class |archivedate=2011-07-23 }}{{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}}{{Cite web |last=México~kleytonbio@yahoo.com.br |first=Kleyton Magno Cantalice~Universidad Nacional Autónoma de |last2=México~alvarado@geologia.unam.mx |first2=Jesús Alvarado-Ortega~Universidad Nacional Autónoma de |date=2016-12-12 |title=Eekaulostomus cuevasae gen. and sp. nov., an ancient armored trumpetfish (Aulostomoidea) from Danian (Paleocene) marine deposits of Belisario Domínguez, Chiapas, southeastern Mexico |url=https://palaeo-electronica.org/content/2016/1659-ancientarmored-trumpetfish |access-date=2024-12-30 |website=Palaeontologia Electronica |language=en}}

The type species, E. bolcensis, was initially described in error by Volta as a fossil specimen of the Chinese trumpetfish (Aulostomus chinensis) before being moved to its own species within Fistularia (thought to be synonymous with Aulostomus at the time) by de Blainville. It was later reclassified into Aulostomus and remained there for over a century until reclassification into its own genus,with the description of a new species.{{Cite book |last=Geology |first=British Museum (Natural History) Department of |url=https://www.google.com/books/edition/Catalogue_of_the_Fossil_Fishes_in_the_Br/ZtEKAQAAIAAJ? |title=Catalogue of the Fossil Fishes in the British Museum (Natural History): Actinopterygian Teleostomi of the suborders Isospondyli (in part), Ostariophysi, Apodes, Percesoces, Hemibranchii, Acanthopterygii, and Anacanthini |last2=Woodward |first2=Arthur Smith |date=1901 |publisher=order of the Trustees |language=en}}