Fluvioviridavis

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]

Second known specimen of F. platyrhamphus

Fluvioviridavis Temporal range: Early Eocene, (Ypresian) PreꞒ Ꞓ O S D C P T J K Pg N
Holotype of F. platyrhamphus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Family:	†Fluvioviridavidae Mayr, 2005[1]
Genus:	†Fluvioviridavis Mayr & Daniels, 2001[2]
Type species
†Fluvioviridavis platyrhamphus Mayr & Daniels, 2001
Other species
†F. michaeldanielsi Mayr & Kitchener, 2024 †F. nazensis Mayr & Kitchener, 2024