| Fluvioviridavis Temporal range: Early Eocene,
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| Holotype of F. platyrhamphus | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Family: | †Fluvioviridavidae Mayr, 2005[2] |
| Genus: | †Fluvioviridavis Mayr & Daniels, 2001[1] |
| Type species | |
| †Fluvioviridavis platyrhamphus Mayr & Daniels, 2001
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| Other species | |
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Fluvioviridavis is an extinct genus of bird from the Early Eocene Green River Formation of Wyoming (United States) and London Clay Formation of the United Kingdom.[3] There are three known species: F. platyrhamphus from the Green River and F. michaeldanielsi and F. nazensis from the London Clay. Fluvioviridavis is the only genus currently named in the monotypic family Fluvioviridavidae.[4]
- ^ Mayr, G. & Daniels, M. 2001. "A new short-legged landbird from the early Eocene of Wyoming and contemporaneous European sites". Acta Palaeontologica Polonica 46 (3): 393-402
- ^ Gerald Mayr (2005). "A Fluvioviridavis-like Bird from the Middle Eocene of Messel, Germany". Canadian Journal of Earth Sciences. 42 (11): 2021–2037. Bibcode:2005CaJES..42.2021M. doi:10.1139/e05-060.
- ^ Nesbitt, S. J.; Ksepka, D. T.; Clarke, J. A. (2011). Iwaniuk, Andrew (ed.). "Podargiform Affinities of the Enigmatic Fluvioviridavis platyrhamphus and the Early Diversification of Strisores ("Caprimulgiformes" + Apodiformes)". PLOS ONE. 6 (11): e26350. Bibcode:2011PLoSO...626350N. doi:10.1371/journal.pone.0026350. PMC 3227577. PMID 22140427.
- ^ Mayr, Gerald; Kitchener, Andrew C. (2024-06-07). "The non-apodiform Strisores (potoos, nightjars and allied birds) from the early Eocene London Clay of Walton-on-the-Naze". Palaeobiodiversity and Palaeoenvironments. doi:10.1007/s12549-024-00610-9. ISSN 1867-1594.