A branch of the living world.
110,000 accepted animal species, linked through classification, synonyms, distributions and source literature.
These attributed records come from Catalogue of Life, 2026-09-11. Detail varies; they are not all fully researched, illustrated articles. Browse researched folklore and fiction.
Matches documented source distribution records. Geographic coverage is incomplete.
| Species | Classification | Source status |
|---|---|---|
| Ischnocnema surda Canedo, Pimenta, Leite & Caramaschi, 2010 | BrachycephalidaeChordata | Accepted speciesRecorded extant |
| Ischnocnema venancioi (Lutz, 1958) | BrachycephalidaeChordata | Accepted speciesRecorded extant |
| Ischnocnema verrucosa (Reinhardt & Lütken, 1862) | BrachycephalidaeChordata | Accepted speciesRecorded extant |
| Ischnocnema vizottoi Martins & Haddad, 2010 | BrachycephalidaeChordata | Accepted speciesRecorded extant |
| Ischnohyla daraiensis (Richards, Donnellan & Oliver, 2023) | PelodryadidaeChordata | Accepted speciesRecorded extant |
| Ischnohyla gracilis (Richards, Donnellan & Oliver, 2023) | PelodryadidaeChordata | Accepted speciesRecorded extant |
| Ischnohyla vocivincens (Menzies, 1972) | PelodryadidaeChordata | Accepted speciesRecorded extant |
| Isichthys henryi Gill, 1863 | MormyridaeChordata | Accepted speciesExtinction status not supplied |
| Cookie cutter sharkIsistius brasiliensis (Quoy & Gaimard, 1824) | DalatiidaeChordata | Accepted speciesExtinction status not supplied |
| Isistius plutodus Garrick & Springer, 1964 | DalatiidaeChordata | Accepted speciesExtinction status not supplied |
| Iskandaria kuschakewitschi (Herzenstein, 1890) | NemacheilidaeChordata | Accepted speciesExtinction status not supplied |
| Rufous-bellied AntwrenIsleria guttata (Vieillot, 1824) | ThamnophilidaeChordata | Accepted speciesRecorded extant |
| Plain-throated AntwrenIsleria hauxwelli (P. L. Sclater, 1857) | ThamnophilidaeChordata | Accepted speciesRecorded extant |
| Iso flosmaris Jordan & Starks, 1901 | IsonidaeChordata | Accepted speciesExtinction status not supplied |
| Iso hawaiiensis Gosline, 1952 | IsonidaeChordata | Accepted speciesExtinction status not supplied |
| Iso natalensis Regan, 1919 | IsonidaeChordata | Accepted speciesExtinction status not supplied |
| Iso nesiotes Saeed, Ivantsoff & Crowley, 1993 | IsonidaeChordata | Accepted speciesExtinction status not supplied |
| Iso rhothophilus (Ogilby, 1895) | IsonidaeChordata | Accepted speciesExtinction status not supplied |
| Montane HutiaIsolobodon montanus (Miller, 1922) | EchimyidaeChordata | Accepted speciesRecorded extinct |
| Puerto Rican HutiaIsolobodon portoricensis J. A. Allen, 1916 | EchimyidaeChordata | Accepted speciesRecorded extinct |
| Golden BandicootIsoodon auratus (Ramsay, 1887) | PeramelidaeChordata | Accepted speciesRecorded extant |
| Northern Brown BandicootIsoodon macrourus (Gould, 1842) | PeramelidaeChordata | Accepted speciesRecorded extant |
| Southern Brown BandicootIsoodon obesulus (Shaw, 1797) | PeramelidaeChordata | Accepted speciesRecorded extant |
| Lang's IsopachysIsopachys borealis Lang & Böhme, 1990 | ScincidaeChordata | Accepted speciesExtinction status not supplied |
| Isopisthus parvipinnis (Cuvier, 1830) | SciaenidaeChordata | Accepted speciesExtinction status not supplied |
| bigeye corvinaIsopisthus remifer Jordan & Gilbert, 1882 | SciaenidaeChordata | Accepted speciesExtinction status not supplied |
| Isorineloricaria acuarius Ray & Armbruster, 2016 | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Isorineloricaria spinosissima (Steindachner, 1880) | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Isorineloricaria villarsi (Lütken, 1874) | LoricariidaeChordata | Accepted speciesExtinction status not supplied |
| Yellow-crowned Brush-tailed RatIsothrix bistriata Wagner, 1845 | EchimyidaeChordata | Accepted speciesRecorded extant |
| Rio Negro Brush-tailed RatIsothrix negrensis Thomas, 1920 | EchimyidaeChordata | Accepted speciesRecorded extant |
| Plain Brush-tailed RatIsothrix pagurus Wagner, 1845 | EchimyidaeChordata | Accepted speciesRecorded extant |
| Sinnamary Brush-tailed RatIsothrix sinnamariensis Vie et al., 1996 | EchimyidaeChordata | Accepted speciesRecorded extant |
| African Dwarf KingfisherIspidina lecontei Cassin, 1856 | AlcedinidaeChordata | Accepted speciesRecorded extant |
| Isthmoheros tuyrensis (Meek & Hildebrand, 1913) | CichlidaeChordata | Accepted speciesExtinction status not supplied |
| Isthmohyla angustilineata (Taylor, 1952) | HylidaeChordata | Accepted speciesRecorded extant |
| Isthmohyla calypsa (Lips, 1996) | HylidaeChordata | Accepted speciesRecorded extant |
| Isthmohyla debilis (Taylor, 1952) | HylidaeChordata | Accepted speciesRecorded extant |
| Isthmohyla graceae (Myers & Duellman, 1982) | HylidaeChordata | Accepted speciesRecorded extant |
| Isthmohyla lancasteri (Barbour, 1928) | HylidaeChordata | Accepted speciesRecorded extant |
| Isthmohyla picadoi (Dunn, 1937) | HylidaeChordata | Accepted speciesRecorded extant |
| Isthmohyla pictipes (Cope, 1875) | HylidaeChordata | Accepted speciesRecorded extant |
| Isthmohyla pseudopuma (Günther, 1901) | HylidaeChordata | Accepted speciesRecorded extant |
| Isthmohyla rivularis (Taylor, 1952) | HylidaeChordata | Accepted speciesRecorded extant |
| Isthmohyla tica (Starrett, 1966) | HylidaeChordata | Accepted speciesRecorded extant |
| Isthmohyla xanthosticta (Duellman, 1968) | HylidaeChordata | Accepted speciesRecorded extant |
| Isthmohyla zeteki (Gaige, 1929) | HylidaeChordata | Accepted speciesRecorded extant |
| Yellow DeermouseIsthmomys flavidus (Bangs, 1902) | CricetidaeChordata | Accepted speciesRecorded extant |
| Mount Pirri DeermouseIsthmomys pirrensis (Goldman, 1912) | CricetidaeChordata | Accepted speciesRecorded extant |
| Isthmura bellii (Gray, 1850) | PlethodontidaeChordata | Accepted speciesRecorded extant |
Source and selection
Bánki, O., Roskov, Y., Döring, M., Ower, G., Hernández Robles, D. R., Plata Corredor, C. A., Stjernegaard Jeppesen, T., Örn, A., Pape, T., Hobern, D., Garnett, S., Little, H., DeWalt, R. E., Miller, J., Orrell, T., Aalbu, R., Abbott, J., Aedo, C., Aescht, E., et al. (2026). Catalogue of Life (Version 2026-09-11). Catalogue of Life Foundation, Amsterdam, Netherlands. https://doi.org/10.48580/dgz5n
First records in source order under phylum quotas, then source-order overflow if a quota is short. This is a selective snapshot. Source name strings can include author names, which are also searchable.