Eoborus

{{Short description|Extinct genus of gastropods}}

{{Italic title}}

{{Taxobox

| name = Eoborus

| fossil_range= {{fossil range|Paleocene|Miocene|ref={{cite journal |last1=Salvador |first1=Rodrigo Brincalepe |last2=de Simone |first2=Luiz Ricardo Lopes |title=New fossil pulmonate snails from the Paleocene of Itaboraí Basin, Brazil (Pulmonata: Cerionidae, Strophocheilidae, Orthalicidae) |journal=Archiv für Molluskenkunde: International Journal of Malacology |date=1 June 2012 |volume=141 |issue=1 |pages=43–50 |doi=10.1127/arch.moll/1869-0963/141/043-050 |s2cid=88222194 }}{{cite journal |last1=Klappenbach |first1=M.A. |last2=Olazarri |first2=J. |year=1986 |title=Notas sobre Strophocheilidae IV. Eoborus berroi, nueva espécie del Mioceno uruguayo |trans-title=Notes on Strophocheilidae IV. Eoborus berroi, a new species from the Uruguayan Miocene |language=Spanish |journal=Comucaciones Paleontológicas del Museo de História Natural de Montevideo |volume=1 |pages=217–225 |oclc=949711393 }}}}

| image = Eoborus_sanctijosephi.jpg

| image_caption = apertural view of Eoborus sanctijosephi

| regnum = Animalia

| phylum = Mollusca

| classis = Gastropoda

| unranked_superfamilia = clade Heterobranchia

clade Euthyneura
clade Panpulmonata

clade Eupulmonata

clade Stylommatophora

informal group Sigmurethra

| superfamilia = Acavoidea

| familia = Strophocheilidae

| subfamilia = Megalobuliminae

| genus = {{extinct}}Eoborus

| genus_authority = Klappenbach & Olazarri, 1970{{cite journal |last1=Klappenbach |first1=M.A. |last2=Olazarri |first2=J. |year=1970 |title=Notas sobre Strophocheilidae (Moll. Gastr.), III. Eoborus, nuevo género paraespecies fósiles de esta familia sudamericana |trans-title=Notes on Strophocheilidae (Moll. Gastr.), III. Eoborus, new genus for fossil species of this South American family |language=Spanish |journal=Archiv für Molluskenkunde |volume=100 |issue=3/4 |pages=179–182 }}

| type_species = {{extinct}}Eoborus charruanus

| type_species_authority = (Frenguelli, 1930)

| subdivision_ranks = Species

| subdivision =

• {{extinct}}Eoborus berroi
• {{extinct}}Eoborus charruanus
• {{extinct}}Eoborus fusiforme
• {{extinct}}Eoborus rotundus
• {{extinct}}Eoborus sanctijosephi

| diversity = 5 extinct species

}}

Eoborus is a fossil genus of medium-sized air-breathing land snails, terrestrial pulmonate gastropods in the family Strophocheilidae. Eoborus is the oldest fossil record of Strophocheilidae, dating from the Middle Paleocene of Brazil (Itaboraí Basin) and Uruguay (Santa Lucía Basin).{{cite journal |last1=Martínez |first1=Sergio |last2=Veroslavsky |first2=Gerardo |last3=Verde |first3=Mariano |title=Primer registro del Paleoceno en el Uruguay: paleosuelos calcáreos fosilíferos en la cuenca de Santa Lucía |trans-title=First Paleocene record in Uruguay: fossiliferous calcareous paleosols in the Santa Lucía basin |language=Spanish |journal=Revista Brasileira de Geociências |date=12 June 2017 |volume=27 |issue=3 |pages=292–302 |url=http://www.ppegeo.igc.usp.br/index.php/rbg/article/view/11295 |access-date=25 November 2020 |archive-date=5 June 2023 |archive-url=https://web.archive.org/web/20230605053952/https://www.ppegeo.igc.usp.br/index.php/rbg/article/view/11295 |url-status=dead }} The Brazilian species, alongside Eoborus charruanus from Uruguay, are the oldest fossil record of the family.

The small size and large umbilicus of Eoborus are its most remarkable characteristics; it is considered primitive in the family Strophocheilidae.