[1] Initially believed to belong to the genus Strophocheilus by Spix (1827), Pebasiconcha is a common fossil shell from western Amazonia.

[2] The generic name is derived from the Pebas Formation where the fossils have been found and the Latin word "concha" meaning shell.

[2] Pebasiconcha lived in the Pebas Mega-Wetlands that covered large parts of northern South America during the middle Miocene period, an environment known for its rich freshwater mollusc fauna.

The terrestrial areas of the wetlands were inhabited by a minimum of two land snails, Pebasiconcha and Orthalicus linteus.

While the later most likely inhabited the tree trunks and branches as its extant relatives, Pebasiconcha is hypothesized to have lived in the humid bottom layers.