''Rhynchocyclus'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

passerine A passerine () is any bird of the order Passeriformes (; from Latin 'sparrow' and '-shaped') which includes more than half of all bird species. Sometimes known as perching birds, passerines generally have an anisodactyl arrangement of their ...

birds in the tyrant flycatcher family

Tyrannidae The tyrant flycatchers (Tyrannidae) comprise a Family (biology), family of passerine birds which is found virtually throughout North America, North and South America. It is the world's largest family of birds, with more than 400 species, and is ...

Taxonomy

The genus ''Rhynchocyclus'' was introduced in 1860 by the German ornithologists

Jean Cabanis Jean Louis Cabanis (8 March 1816 – 20 February 1906) was a German ornithologist. He worked at the bird collections of the Natural History Museum in Berlin becoming its first curator of birds in 1850. He founded the ''Journal für Ornithologie ...

and

Ferdinand Heine Jakob Gottlieb Ferdinand Heine (9 March 1809 in Halberstadt – 28 March 1894) was a German ornithologist and collector. Heine had one of the largest private collection of birds in the mid-19th century. The collection now housed at the Heineanum ...

as a replacement name for ''Cyclorhynchus'' that had been introduced in 1836 by

Carl Jakob Sundevall Carl Jakob Sundevall (22 October 1801 in Högestad – 2 February 1875) was a Sweden, Swedish zoologist. Sundevall studied at Lund University, where he received a Ph.D. in 1823. After traveling to East Asia, he studied medicine, graduating as a ...

. The name ''Cyclorhynchus'' was preoccupied by ''Cyclorrhynchus'' that had been introduced in 1829 by

Johann Jakob Kaup Johann Jakob von Kaup (10 April 1803 – 4 July 1873) was a German naturalist. A proponent of natural philosophy, he believed in an innate mathematical order in nature and he attempted biological classifications based on the Quinarian system. Kaup ...

. The

type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...

is ''Cyclorhynchus olivaceus'' Desmarest which is a

junior synonym In taxonomy, the scientific classification of living organisms, a synonym is an alternative scientific name for the accepted scientific name of a taxon. The botanical and zoological codes of nomenclature treat the concept of synonymy differently. ...

of ''Platyrhynchos olivaceus''

Temminck Coenraad Jacob Temminck (; 31 March 1778 – 30 January 1858) was a Dutch patrician, zoologist and museum director. Biography Coenraad Jacob Temminck was born on 31 March 1778 in Amsterdam in the Dutch Republic. From his father, Jacob ...

, the eastern olivaceous flatbill. The genus name ''Rhynchocyclus'' is an anagram of the original name ''Cyclorhynchus''. The latter combines the

Ancient Greek Ancient Greek (, ; ) includes the forms of the Greek language used in ancient Greece and the classical antiquity, ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Greek ...

κυκλος/''kuklos'' meaning "circle" or "shield" with ῥυγχος /''rhunkhos'' meaning "bill". The genus contains five species:

References

Bird genera Taxa named by Ferdinand Heine {{Tyrannidae-stub