| Registro completo |
| Provedor de dados: |
Naturalis
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| País: |
Netherlands
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| Título: |
On relict hydrobiid species in Brazilian Amazonia (Gastropoda, Prosobranchia, Hydrobiidae)
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| Autores: |
Wesselingh, F.P.
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| Data: |
2000
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| Ano: |
2000
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| Palavras-chave: |
South America
Amazonia
Miocene
Recent
Hydrobiidae
Dyris
Sioliella
New species
42.73
38.22
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| 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.
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| Tipo: |
Article / Letter to the editor
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| Identificador: |
http://www.repository.naturalis.nl/record/235203
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| Formato: |
application/pdf
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| Fonte: |
Various articles (0005-6219) vol.64 (2000) p.129
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| Direitos: |
(c) Naturalis
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