Pengana

Pengana robertbolesi
Temporal range: Early Miocene
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Accipitriformes
Family: Accipitridae
Genus: Pengana
Species: P. robertbolesi
Binomial name
Pengana robertbolesi
Boles, 1993a

Pengana robertbolesi, also referred to as the flexiraptor, is an extinct bird of prey that lived during the Early Miocene (2316 million years ago). Living relatives of P. robertbolesi may include the harriers. When alive, it may have resembled a cross between the secretary bird and crested caracara.

Its remains were found in Riversleigh, Queensland, Australia. P. robertbolesi is only known from a tibiotarsus (ankle bone). However, this is of most peculiar construction, allowing the leg to be swivelled backwards and sideways. The bird was thus well adapted to reaching into holes and crevices and extracting prey. The vernacular name flexiraptor was coined to reflect this ability.

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