†family Gracilitarsidae Mayr 2001 (bird)
Full reference: G. Mayr. 2001. A new specimen of the tiny Middle Eocene bird Gracilitarsus mirabilis (new family: Gracilitarsidae). The Condor 103(1):78-84
Parent taxon: Neognathae according to G. Mayr 2001
Sister taxa: Alciformes, Bucerotiformes, Eurolimnornithiformes, Galloanserae, Neoaves, Odontoanserae, Pelagornithidae, Perplexicervix, Vastanavis
Subtaxa: Gracilitarsus
Type: Gracilitarsus
Ecology: ground dwelling carnivore