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Statements

Subject Item
dbr:List_of_prehistoric_jawless_fish_genera
dbo:wikiPageWikiLink
dbr:Furcacauda
Subject Item
dbr:Furcacauda
rdf:type
dbo:Animal owl:Thing dbo:Species dbo:Eukaryote wikidata:Q19088 wikidata:Q729
rdfs:label
Furcacauda 福尔卡鱼属
rdfs:comment
福尔卡鱼屬（屬名：Furcacauda，或也依學名稱作叉尾花鱗魚）是已灭绝的一种生物，生存于志留纪至泥盆纪的加拿大。全長約 9 公分。身體寬扁，鰓孔位於眼後方，口小，可能具有葉狀鰭。尾部有極明顯的分叉，從分叉間的棘狀構造推測可能有近似帆狀的構造，尾部整體可能呈半月形。 其近親通常沒有太複雜的生理構造，多從口直接接通到肛門；但福尔卡鱼的體內具有類似胃的結構，可能已經具有簡單的消化系統。 Furcacauda is a genus of thelodontid agnathan from the Lower Devonian of Canada, and is the type genus of the order Furcacaudiformes. Furcacaudiform thelodontids were deep water jawless vertebrates with symmetrical fork and lobed-finned tails and scales smaller than typical loganellid and nikoliviid thelodonti scales. Furcacaudiform thelodonts are noted as having a laterally compressed body, large anterior eyes, slightly posterior, lateral, and vertical to a small mouth, and a condensed curved row of branchial openings (gills) directly posterior to the eyes. Many but not all had laterally paired fins. Wilson and Caldwell also note the presence of a caudal peduncle and a long caudal fin made of two large lobes, one dorsal and one ventral separated by 8 to 14 smaller intermediate lobes, givi
foaf:depiction
n16:Furcacauda_heintzae.png n16:Furcacauda_heintzae.jpg n16:Furcacauda_fredholmae.png
dcterms:subject
dbc:Thelodonti_genera dbc:Devonian_jawless_fish dbc:Devonian_fish_of_North_America
dbo:wikiPageID
18905876
dbo:wikiPageRevisionID
1101278474
dbo:wikiPageWikiLink
dbr:Furcacaudidae dbr:Vertebrata dbr:Chordata dbr:Canada dbr:Furcacaudiformes dbc:Thelodonti_genera dbr:Devonian dbr:Agnathan dbc:Devonian_fish_of_North_America dbc:Devonian_jawless_fish dbr:Thelodont dbr:Animal
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owl:sameAs
dbpedia-zh:福尔卡鱼属 freebase:m.04jcyk0 wikidata:Q5509484 n18:4jeSp yago-res:Furcacauda
dbp:subphylum
dbr:Vertebrata
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dbt:Italic_title dbt:Thelodonti dbt:Portal dbt:Commons_category-inline dbt:Short_description dbt:Taxonbar dbt:Taxobox dbt:Reflist dbt:Fossilrange
dbo:thumbnail
n16:Furcacauda_heintzae.jpg?width=300
dbp:classis
†Thelodonti
dbp:familia
†Furcacaudidae
dbp:fossilRange
Lower Devonian
dbp:genus
†Furcacauda
dbp:genusAuthority
Sepkoski, 2002
dbp:imageCaption
Furcacauda heintzae
dbp:ordo
†Furcacaudiformes
dbp:phylum
dbr:Chordata
dbp:regnum
Animalia
dbp:subdivision
*Furcacauda heintzae *Furcacauda fredholmae
dbp:subdivisionRanks
Species
dbp:typeSpecies
Sigurdia heintzae
dbo:abstract
福尔卡鱼屬（屬名：Furcacauda，或也依學名稱作叉尾花鱗魚）是已灭绝的一种生物，生存于志留纪至泥盆纪的加拿大。全長約 9 公分。身體寬扁，鰓孔位於眼後方，口小，可能具有葉狀鰭。尾部有極明顯的分叉，從分叉間的棘狀構造推測可能有近似帆狀的構造，尾部整體可能呈半月形。 其近親通常沒有太複雜的生理構造，多從口直接接通到肛門；但福尔卡鱼的體內具有類似胃的結構，可能已經具有簡單的消化系統。 Furcacauda is a genus of thelodontid agnathan from the Lower Devonian of Canada, and is the type genus of the order Furcacaudiformes. Furcacaudiform thelodontids were deep water jawless vertebrates with symmetrical fork and lobed-finned tails and scales smaller than typical loganellid and nikoliviid thelodonti scales. Furcacaudiform thelodonts are noted as having a laterally compressed body, large anterior eyes, slightly posterior, lateral, and vertical to a small mouth, and a condensed curved row of branchial openings (gills) directly posterior to the eyes. Many but not all had laterally paired fins. Wilson and Caldwell also note the presence of a caudal peduncle and a long caudal fin made of two large lobes, one dorsal and one ventral separated by 8 to 14 smaller intermediate lobes, giving the appearance of a striated half-moon shaped tail resembling the tail of a heterostracan. A large square cavity within the gut connecting a small intestine to an anal opening lead many to believe that it is this genus that exhibits the first vertebrate stomach. According to Wilson and Caldwell their discovery, based on sediment infillings of fossils of the Furcacauda heintze, gives credence to the evolutionary development of stomach before jaws.
gold:hypernym
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3525
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dbr:Thelodont
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dbr:Furcacaudidae
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dbr:Furcacaudiformes
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wikipedia-en:Furcacauda
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dbr:Furcacauda
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dbr:Furcacauda
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dbr:List_of_thelodont_genera
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