About
Education
Discuss
TraitBank
Sign In
Sign Up
Language
Deutsch
English
Español
français
italiano
Nederlands
Piemontèis
Português do Brasil
suomi
Türkçe
Čeština
Ελληνικά
македонски
Українська
العربية
简体中文
繁體中文
names in breadcrumbs
vernacular
scientific
About
Education
Discuss
TraitBank
Sign In
Sign Up
en
Deutsch
English
Español
français
italiano
Nederlands
Piemontèis
Português do Brasil
suomi
Türkçe
Čeština
Ελληνικά
македонски
Українська
العربية
简体中文
繁體中文
names in breadcrumbs
vernacular
scientific
Data Search
Showing 1 - 50 of 177 records for 177 taxa
with ecoregion: Northwest Russian-Novaya Zemlya Tundra
edit filters
download tsv
new search
1
2
3
4
Last »
Wildfinder (WWF)
Vipera berus (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Ursus arctos Linnaeus 1758
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Rissa tridactyla (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Surnia ulula (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Prunella atrogularis (Brandt & JF 1843)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Psammodromus algirus (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Vanellus vanellus (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Sorex minutissimus Zimmermann 1780
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Sorex araneus Linnaeus 1758
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Xenus cinereus (Güldenstädt 1775)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Sorex isodon Turov 1924
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Sterna paradisaea Pontoppidan 1763
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Somateria mollissima (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Saxicola torquata
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Tringa glareola Linnaeus 1758
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Turdus philomelos Brehm & CL 1831
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Vulpes lagopus (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Stercorarius parasiticus (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Saxicola rubetra (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Turdus iliacus Linnaeus 1758
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Uria lomvia (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Rana temporaria Linnaeus 1758
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Tetrao tetrix
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Somateria spectabilis (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Sorex caecutiens Laxmann 1788
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Pluvialis squatarola (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Tringa erythropus (Pallas 1764)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Sorex tundrensis Merriam 1900
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Turdus pilaris Linnaeus 1758
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Pteromys volans (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Sicista betulina (Pallas 1779)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Rallus aquaticus Linnaeus 1758
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Rana arvalis Nilsson 1842
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Plectrophenax nivalis (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Stercorarius pomarinus (Temminck 1815)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Sciurus vulgaris Linnaeus 1758
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Vulpes vulpes (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Tringa nebularia (Gunnerus 1767)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Prunella modularis (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Riparia riparia (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Poecile cinctus (Boddaert 1783)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Uria aalge (Pontoppidan 1763)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Rangifer tarandus (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Sorex minutus Linnaeus 1766
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Sylvia curruca
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Tamias sibiricus (Laxmann 1769)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Pinicola enucleator (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Sylvia borin (Boddaert 1783)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Stercorarius longicaudus Vieillot 1819
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
Wildfinder (WWF)
Pluvialis apricaria (Linnaeus 1758)
ecoregion
URI:
https://www.wikidata.org/entity/Q295469
Definition:
ecologically and geographically defined area that is smaller than a biogeographic realm
show all records
Northwest Russian-Novaya Zemlya Tundra
URI:
http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra
Attribution:
http://www.worldwildlife.org/ecoregions/PA1108
show all records
1
2
3
4
Last »
show query
MATCH (gathered_predicate0:Term)-[:parent_term|synonym_of*0..]->(:Term{ uri: "https://www.wikidata.org/entity/Q295469" }) WITH collect(DISTINCT gathered_predicate0) AS gathered_predicate0s MATCH (page:Page)-[:trait]->(trait:Trait), (trait)-[:object_term]->(object_term0:Term)-[:parent_term|synonym_of*0..]->(tgt_object_term0:Term), (trait)-[:predicate]->(pred:Term) WHERE pred IN gathered_predicate0s AND tgt_object_term0.uri = "http://eol.org/schema/terms/Northwest_Russian-Novaya_Zemlya_tundra" WITH DISTINCT trait RETURN trait.eol_pk LIMIT 50