Data/hora: 08/06/2024 12:54:47

Provedor de dados: | 16
País: | Netherlands
Título: | On relict hydrobiid species in Brazilian Amazonia (Gastropoda, Prosobranchia, Hydrobiidae)
Autores: | Wesselingh, F.P.
Data: | 2000
Ano: | 2000
Palavras-chave: | South America; Amazonia; Miocene; Recent; Hydrobiidae; Dyris; Sioliella; New species; 42.73; 38.22.
Resumo: | Two extant hydrobiid species from the lower Tapajos river of Brazil are redescribed. Potamopyrgus amazonicus Haas, 1949, is assigned to the genus Dyris Conrad, 1871. At least eleven species from Miocene deposits of Western Amazonia are assigned to Dyris, a genus that was previously assumed to be extinct. The apertural features of Sioliella effusa Haas, 1949, are considered indicative of a close relationship to Miocene Amazonian taxa formaly assigned to Eubora Kadolsky, 1980. Sioliella ovata spec. nov., a Miocene species resembling S. effusa is described. The two Tapajos species can be regarded as relicts of a speciose, endemic, Miocene Western Amazonian molluscan fauna.
Tipo: | Article / Letter to the editor
Identificador: | http://www.repository.naturalis.nl/record/235203
Formato: | application/pdf
Fonte: | Various articles (0005-6219) vol.64 (2000) p.129
Fonte: | (c) Naturalis