The Tristan Moorhen (Gallinula nesiotis) was an extinct flightless rail from the South Atlantic island of Tristan da Cunha and was physically similar to the Gough Island Moorhen of Gough Island, 395 miles to the southeast. Alternative meaning: Nineteenth Century (periodical) (18th century — 19th century — 20th century — more centuries) As a means of recording the passage of time, the 19th century was that century which lasted from 1801-1900 in the sense of the Gregorian calendar. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms (as opposed to folk taxonomy). ... Phyla Subregnum Parazoa Porifera (sponges) Subregnum Agnotozoa Placozoa (trichoplax) Orthonectida (orthonectids) Rhombozoa (dicyemids) Subregnum Eumetazoa Radiata (unranked) (radial symmetry) Ctenophora (comb jellies) Cnidaria (coral, jellyfish, anemones) Bilateria (unranked) (bilateral symmetry) Acoelomorpha (basal) Myxozoa (slime animals) Superphylum Deuterostomia (blastopore becomes anus) Chordata (vertebrates, etc. ... Typical Classes Subphylum Urochordata - Tunicatas Ascidiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with... Orders Many - see section below. ... Families †Gastornithidae Aramidae Psophiidae Rallidae Heliornithidae Rhynochetidae †Aptornithidae Eurypigidae Cariamidae Otidae Gruidae †Phorusrhacidae The diverse order Gruiformes contains about 12 bird families with, on first sight, little in common. ... Genera Sarothrura Himantornis Canirallus Coturnicops Micropygia Rallina Anurolimnas Laterallus Nesoclopeus Gallirallus Rallus Lewinia Dryolimnas Crex Rougetius Aramidopsis Atlantisia Aramides Amaurolimnas Gymnocrex Amaurornis Porzana Aenigmatolimnas Cyanolimnas Neocrex Pardirallus Eulabeornis Habroptila Megacrex Gallicrex Porphyrio Gallinula Fulica The family Rallidae is a large group of small to medium-sized birds which includes the... Species San Cristobal Moorhen, Gallinula silvestris Tristan Moorhen, Gallinula nesiotis Common Moorhen, Gallinula chloropus Gough Island Moorhen, Gallinula comeri Dusky Moorhen, Gallinula tenebrosa Lesser Moorhen, Gallinula angulata Spot-flanked Gallinule, Gallinula melanops Black-tailed Native-hen, Gallinula ventralis Tasmanian Native-hen, Gallinula mortierii The moorhens are medium-sized water birds... In biology, binomial nomenclature is the formal method of naming species. ... Philip Lutley Sclater (November 4, 1829 - June 27, 1913) was an English lawyer and zoologist. ... Motto: Our faith is our strength Anthem: God Save the Queen Capital Edinburgh of the Seven Seas Status Dependency of Saint Helena Official language(s) English Governor Michael Clancy Administrator Mike Hentley Area 201 km² Population ~280 Currency Saint Helenian pound (SHP) at parity with the UK Pound Sterling (GBP... Binomial name Gallinula comeri (Allen, 1892) The Gough Island Moorhen Gallinula comeri is a medium-sized, almost flightless bird that is similar to the common moorhen (Gallinula chloropus) but is smaller, stockier and with shorter wings. ... Orthographic projection over Gough Island Gough Island (also called Diego Alvarez) is a volcanic island rising from the South Atlantic Ocean to heights of over 900 metres (2950 ft) above sea level and has an area of approximately 65 km² (25 mi²). It includes small satellite islands and rocks such...

The once abundant Tristan Moorhen had become rare by 1873, and by the end of 19th century it was extinct as a result of hunting, predation by introduced species (rats, cats and pigs) and habitat destruction by fire. A handful of taxidermical specimens of the Tristan Moorhen have been preserved; one being at Harvard University.

in 1956 the closely-related Gough Moorhen G. comeri was introduced to Tristan da Cunha.