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Statements

Subject Item
dbr:Thylacocephala
rdf:type
yago:Object100002684 yago:Invertebrate101905661 dbo:Band yago:Organism100004475 yago:Crustacean101974773 yago:PhysicalEntity100001930 yago:WikicatArthropods dbo:Insect yago:Whole100003553 yago:WikicatCrustaceans yago:Animal100015388 yago:LivingThing100004258 yago:WikicatPrehistoricCrustaceans yago:Arthropod101767661
rdfs:label
Thylacocephala 袋头纲 Thylacocephala Thylacocephala Thylacocephala Thylacocephala Thylacocephala Thylacocephala Thylacocephala
rdfs:comment
Con il termine tilacocefali (Thylacocephala, dal greco θύλακος thylakos cioè "sacco" e κεφαλή kephalēs "testa") si indica una classe estinta di artropodi a doppio strato. Thylacocephala (лат., от θύλακος — «мешок» и κεφαλή — «голова») — класс вымерших членистоногих, существовавший с кембрия по меловой период (513,0—93,9 млн лет назад). Thylacocephala(del griego θύλακος thylakos, "bolsa", y κεφαλή (céfalon), "cabeza", es una clase única de artrópodos extintos con posible relación con los crustáceos que vivió entre el Silúrico y el Cretácico. 袋头纲（学名：Thylacocephala，取自希腊语“θύλακος”（袋）和“κεφαλή”（头）的意思），是一类独特的底栖型海生节肢动物。由於袋頭綱是一個在1980年代才建立起來的分類單元，相關物種的研究歷史還很短。 本綱物種具有左右对称的巨大非钙质双瓣，包裹着全身；一对大且圓胖的複眼，陷於頭胸甲前的凹槽中；三对大的，8-16对游泳足，8对鳃以及分节的体节。此前发现的化石材料多数仅保存壳体，因而目前其分类主要依据其壳体形态和表面的壳饰。其化石记录最早可能在寒武纪（如），自志留纪至白垩纪以来多样性一直较低，关于其分类位置和生态特性也一直存在争议。 最早期的袋頭綱物種化石估計出現於晚寒武世，但要到下志留世的海洋群落的出現，才可以肯定牠們的存在。作為一個生物群組，牠們存活至上白堊世。 除此以外，有關袋頭綱物種在解剖學的基礎方面、生活模式及與其他甲殼亞門物種的關係，至今仍有很多不確定性。 Thylacocephala — вимерлий клас ракоподібних, що існував з раннього силуру до пізньої крейди. Моживо існував у пізньому кембрії. Thylacocephala (von altgriechisch θύλακος thylakos „Sack“ und κεφαλή kephalē „Kopf“) ist eine ausgestorbene Klasse von zweischaligen Gliederfüßern (Arthropoda). Thylacocephala (do grego θύλακος ou thylakos, que significa "bolsa", e κεφαλή ou que significa "cabeça") é um grupo único de artrópodes extintos, com possíveis afinidades aos crustáceos. Como classe, eles têm uma curta história de pesquisa, com início dos anos 1980. Eles normalmente possuem uma grande carapaça achatada lateralmente que abrange todo o corpo. Os olhos compostos tendem a ser grandes e bulbosos, ocupando um entalhe frontal na carapaça. Eles possuem três pares de grandes membros raptoriais, e o abdómen carrega uma série de pequenos membros nadadores. Les thylacocéphales (du grec thylacos, qui signifie «» bourse » ou « poche » et céphalon, qui signifie « tête ») sont un groupe d'arthropodes éteints qui ont peut-être un lien de parenté avec les crustacés. Les recherches concernant cette classe d'arthropodes sont récentes, car ce groupe ne fut décrit qu'au début des années 1980. The Thylacocephala (from the Greek θύλακος or thylakos, meaning "pouch", and κεφαλή or cephalon meaning "head") are a unique grouping of extinct probable mandibulate arthropods, with possible crustacean affinities. As a class they have a short research history, having been erected in the early 1980s. They typically possess a large, laterally flattened carapace that encompasses the entire body. The compound eyes tend to be large and bulbous, and occupy a frontal notch on the carapace. They possess three pairs of large raptorial limbs, and the abdomen bears a battery of small swimming limbs.
foaf:depiction
n15:Ostenocaris_cypriformis.jpg n15:Clausocaris_lithographica_reconstruction.png n15:Ankitokazocaris.jpg n15:Dollocaris_ingens_reconstruction.jpg n15:Thylacares_brandonensis_S12862-014-0159-2-10.jpg
dcterms:subject
dbc:Arthropod_classes dbc:Thylacocephala dbc:Cambrian_first_appearances dbc:Late_Cretaceous_extinctions dbc:Prehistoric_protostome_classes dbc:Prehistoric_crustaceans
dbo:wikiPageID
7149700
dbo:wikiPageRevisionID
1119665529
dbo:wikiPageWikiLink
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owl:sameAs
freebase:m.0h6wtz dbpedia-es:Thylacocephala dbpedia-de:Thylacocephala n17:Thylacocephala yago-res:Thylacocephala dbpedia-zh:袋头纲 dbpedia-uk:Thylacocephala dbpedia-ru:Thylacocephala n24:2Hubx dbpedia-it:Thylacocephala dbpedia-fr:Thylacocephala wikidata:Q2430260 dbpedia-pt:Thylacocephala
dbp:wikiPageUsesTemplate
dbt:Clade dbt:Automatic_taxobox dbt:Reflist dbt:Taxonbar dbt:Fossilrange dbt:Short_description dbt:Clade_labels
dbo:thumbnail
n15:Clausocaris_lithographica_reconstruction.png?width=300
dbp:authority
Pinna et al., 1982
dbp:fossilRange
Sandbian to Late Cretaceous
dbp:image
Thylacares_brandonensis_S12862-014-0159-2-10.jpg
dbp:imageCaption
Restoration of Clausocaris, a Concavicarida
dbp:label
dbr:Hymenocarina
dbp:subdivision
*Concavicarida *Conchyliocarida
dbp:subdivisionRanks
Orders
dbp:taxon
Thylacocephala
dbp:top
46.0
dbo:abstract
Thylacocephala (von altgriechisch θύλακος thylakos „Sack“ und κεφαλή kephalē „Kopf“) ist eine ausgestorbene Klasse von zweischaligen Gliederfüßern (Arthropoda). Thylacocephala — вимерлий клас ракоподібних, що існував з раннього силуру до пізньої крейди. Моживо існував у пізньому кембрії. 袋头纲（学名：Thylacocephala，取自希腊语“θύλακος”（袋）和“κεφαλή”（头）的意思），是一类独特的底栖型海生节肢动物。由於袋頭綱是一個在1980年代才建立起來的分類單元，相關物種的研究歷史還很短。 本綱物種具有左右对称的巨大非钙质双瓣，包裹着全身；一对大且圓胖的複眼，陷於頭胸甲前的凹槽中；三对大的，8-16对游泳足，8对鳃以及分节的体节。此前发现的化石材料多数仅保存壳体，因而目前其分类主要依据其壳体形态和表面的壳饰。其化石记录最早可能在寒武纪（如），自志留纪至白垩纪以来多样性一直较低，关于其分类位置和生态特性也一直存在争议。 最早期的袋頭綱物種化石估計出現於晚寒武世，但要到下志留世的海洋群落的出現，才可以肯定牠們的存在。作為一個生物群組，牠們存活至上白堊世。 除此以外，有關袋頭綱物種在解剖學的基礎方面、生活模式及與其他甲殼亞門物種的關係，至今仍有很多不確定性。 The Thylacocephala (from the Greek θύλακος or thylakos, meaning "pouch", and κεφαλή or cephalon meaning "head") are a unique grouping of extinct probable mandibulate arthropods, with possible crustacean affinities. As a class they have a short research history, having been erected in the early 1980s. They typically possess a large, laterally flattened carapace that encompasses the entire body. The compound eyes tend to be large and bulbous, and occupy a frontal notch on the carapace. They possess three pairs of large raptorial limbs, and the abdomen bears a battery of small swimming limbs. Inconclusive claims of thylacocephalans have been reported from the lower lower Cambrian, but later study considered that genus as radiodont or arthropod with uncertain systematic position. The oldest unequivocal fossils are Upper Ordovician and Lower Silurian in age. As a group, the Thylacocephala survived to the Santonian stage of the Upper Cretaceous, around 84 million years ago. Beyond this, there remains much uncertainty concerning fundamental aspects of the thylacocephalan anatomy, mode of life, and relationship to the Crustacea, with whom they have always been cautiously aligned. Con il termine tilacocefali (Thylacocephala, dal greco θύλακος thylakos cioè "sacco" e κεφαλή kephalēs "testa") si indica una classe estinta di artropodi a doppio strato. Thylacocephala (do grego θύλακος ou thylakos, que significa "bolsa", e κεφαλή ou que significa "cabeça") é um grupo único de artrópodes extintos, com possíveis afinidades aos crustáceos. Como classe, eles têm uma curta história de pesquisa, com início dos anos 1980. Eles normalmente possuem uma grande carapaça achatada lateralmente que abrange todo o corpo. Os olhos compostos tendem a ser grandes e bulbosos, ocupando um entalhe frontal na carapaça. Eles possuem três pares de grandes membros raptoriais, e o abdómen carrega uma série de pequenos membros nadadores. Alegações inconclusivas de tilacocéfalos foram relatadas no Cambriano Inferior, mas os fósseis inequívocos mais antigos são do Ordoviciano Superior e o Siluriano Inferior. Como um grupo, os tilacocéfalos sobreviveram até ao Cretáceo Superior. Thylacocephala (лат., от θύλακος — «мешок» и κεφαλή — «голова») — класс вымерших членистоногих, существовавший с кембрия по меловой период (513,0—93,9 млн лет назад). Thylacocephala(del griego θύλακος thylakos, "bolsa", y κεφαλή (céfalon), "cabeza", es una clase única de artrópodos extintos con posible relación con los crustáceos que vivió entre el Silúrico y el Cretácico. Les thylacocéphales (du grec thylacos, qui signifie «» bourse » ou « poche » et céphalon, qui signifie « tête ») sont un groupe d'arthropodes éteints qui ont peut-être un lien de parenté avec les crustacés. Les recherches concernant cette classe d'arthropodes sont récentes, car ce groupe ne fut décrit qu'au début des années 1980. Les thylacocéphales possèdent typiquement une carapace volumineuse et aplatie latéralement, mesurant entre 15 et 250 mm, qui recouvre la totalité du corps. Leurs yeux composés sont placés dans une encoche frontale située sur la carapace. Ils possèdent trois grosses paires de pattes ravisseuses et l'abdomen porte une série de petits appendices natatoires. Le plus ancien fossile supposé de thylacocéphale date du Cambrien inférieur, tandis que la classe est clairement présente dans les communautés fossiles marines du Silurien. Le groupe des thylacocéphales a survécu jusqu'au Crétacé supérieur, où ils sont connus dans les Couches à poissons du Mont Liban. En dehors de cela, il reste beaucoup d'incertitudes concernant certains des aspects fondamentaux de l'anatomie des thylacocéphales, de leur mode de vie, et de leurs relations phylogéniques avec les crustacés, auxquels ils ont toujours été prudemment associés.
dbp:image2Caption
Reconstruction of Thylacares, once considered to be the earliest known Thylacocephalan
gold:hypernym
dbr:Group
prov:wasDerivedFrom
wikipedia-en:Thylacocephala?oldid=1119665529&ns=0
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28476
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wikipedia-en:Thylacocephala