Physa mezzalirai

{{Short description|Extinct species of gastropod}}

{{Speciesbox

| fossil_range= {{fossil range|Turonian|Santonian|ref=Ghilardi,RP; Carbonaro, FA; & Simone, LRL. 2011. Physa mezzalirai, a new cretaceous basommatophoran from Adamantina formation, Brazil. Strombus 18(1-2): 1-14. http://www.conchasbrasil.org.br/strombus/online.asp}}

| image =

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| extinct = yes

| genus = Physa

| species = mezzalirai

| authority = Ghilardi, Carbonaro & Simone, 2011

}}

Physa mezzalirai is an extinct fossil species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusc belonging to the family Physidae. This species is characterized by its small sinistral (left-handed) shell, a common feature in this family. Physa mezzalirai dates back to the Turonian to Santonian-aged Adamantina Formation (Upper Cretaceous Bauru Group), in São Paulo state, Brazil.