''Heliadornis'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of prehistoric

seabird Seabirds (also known as marine birds) are birds that are adapted to life within the marine environment. While seabirds vary greatly in lifestyle, behaviour and physiology, they often exhibit striking convergent evolution, as the same enviro ...

s related to modern

tropicbird Tropicbirds are a family, Phaethontidae, of tropical pelagic seabirds. They are the sole living representatives of the order Phaethontiformes. For many years they were considered part of the Pelecaniformes, but genetics indicates they are most cl ...

s, but native to temperate climates. They lived in the

Miocene The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recen ...

. Two species have been recognized. ''Heliadornis ashbyi'' is known from remains in

Maryland Maryland ( ) is a state in the Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean to ...

in the United States and

Antwerp province ) , native_name_lang = nl , settlement_type = Province of Belgium , image_flag = Flag of Antwerp.svg , flag_size = , image_shield = Wapen van de provincie Antwerpen.svg , shield_size ...

in Belgium. The latter were from the

Brussels Brussels (french: Bruxelles or ; nl, Brussel ), officially the Brussels-Capital Region (All text and all but one graphic show the English name as Brussels-Capital Region.) (french: link=no, Région de Bruxelles-Capitale; nl, link=no, Bruss ...

–

Antwerp Antwerp (; nl, Antwerpen ; french: Anvers ; es, Amberes) is the largest city in Belgium by area at and the capital of Antwerp Province in the Flemish Region. With a population of 520,504,

motorway between

Berchem Berchem () is a southern Districts of Antwerp, district of the municipality and city of Antwerp in the Flemish Region of Belgium. Berchem is located along the old ''Grote Steenweg'' (Dutch language, Dutch for 'Big Paved Road') that has connected ...

and

Wilrijk Wilrijk (; former, original spelling: ''Wilrijck'') is a district of the municipality and city of Antwerp in the Belgian province of Antwerp. Wilrijk had been a separate municipality before January 1, 1983; the enlarged municipality of Antwerp was ...

. A second species, '' Heliadornis paratethydicus'' has been described from Upper Miocene strata in

Vösendorf Vösendorf (Central Bavarian: ''Vesnduaf'') is a town in the district of Mödling in the Austrian state of Lower Austria Lower Austria (german: Niederösterreich; Austro-Bavarian: ''Niedaöstareich'', ''Niedaestareich'') is one of the nine state ...

, Austria.

References

{{Taxonbar, from=Q30693740 Phaethontidae Miocene birds Miocene birds of North America