Aramidae is a bird family in the order

Gruiformes The Gruiformes ( ) are an order containing a considerable number of living and extinct bird families, with a widespread geographical diversity. Gruiform means "crane-like". Traditionally, a number of wading and terrestrial bird families that ...

. The

limpkin The limpkin (''Aramus guarauna''), also called carrao, courlan, and crying bird, is a large wading bird related to rails and cranes, and the only extant species in the family Aramidae. It is found mostly in wetlands in warm parts of the America ...

(''Aramus guarauna'') is the only living member of this family, although other species are known from the fossil record, such as '' Papulavis annae'' from the Eocene of France, '' Aramus paludigrus'' from the Middle Miocene of Colombia and '' Badistornis aramus'' from the Oligocene of South Dakota, USA. Another Oligocene fossil from Europe, '' Parvigrus pohli'', has been described as a mosaic of the features shared by the limpkins and the cranes. It shares many morphological features with the cranes and limpkins, but also was much smaller than either group, and was more rail-like in its proportions. In the paper describing the fossil,

Gerald Mayr Gerald Mayr is a German palaeontologist who is Curator of Ornithology at the Senckenberg Research Institute in Frankfurt am Main, Hesse. He has published extensively on fossil birds, especially the Paleogene avifauna of Europe.Mayr, Gerald (2016). ...

suggested that it was similar to the stem species of the Grues (the cranes and limpkins), and that the limpkins evolved massively long bills as a result of the specialisation to feeding on snails. In contrast, the cranes evolved into long-legged forms to walk and probe on open grasslands. '' Anisolornis'' from the Miocene of Argentina, originally described as a phorusrhacid, has been considered to belong within Aramidae, but it has also been allied with

Galliformes Galliformes is an order (biology), order of heavy-bodied ground-feeding birds that includes turkey (bird), turkeys, chickens, Old World quail, quail, and other landfowl. Gallinaceous birds, as they are called, are important in their ecosystems ...

and

Psophiidae ''Psophia'' is a genus of birds restricted to the humid forests of the Amazon and Guiana Shield in South America. It is the only genus in the family Psophiidae. Birds in the genus are commonly known as trumpeters, due to the trumpeting or cackli ...

. '' Gnotornis aramiellus'' from the Oligocene of South Dakota was also originally placed in Aramidae but may be a

heron Herons are long-legged, long-necked, freshwater and coastal birds in the family Ardeidae, with 75 recognised species, some of which are referred to as egrets or bitterns rather than herons. Members of the genus ''Botaurus'' are referred to as bi ...

. Two of the oldest supposed members of the family, ''Aminornis'' and ''Loncornis'', from early

Oligocene The Oligocene ( ) is a geologic epoch (geology), epoch of the Paleogene Geologic time scale, Period that extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that defin ...

deposits in Argentina, are no longer thought to belong to Aramidae. ''Loncornis'' seems to be an misidentified undiagnostic

mammal A mammal () is a vertebrate animal of the Class (biology), class Mammalia (). Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three ...

bone, and ''Aminornis'' was reassigned to the

Anseriformes Anseriformes is an order (biology), order of birds also known as waterfowl that comprises about 180 living species of birds in three families: Anhimidae (three species of screamers), Anseranatidae (the magpie goose), and Anatidae, the largest f ...

References

{{Taxonbar, from=Q13108171 Gruiformes Bird families Taxa named by Charles Lucien Bonaparte