Cladida
http://dbpedia.org/resource/Cladida an entity of type: Eukaryote
Els clàdides (Cladida) són una subclasse d'equinoderms de la classe Crinoidea coneguts només pels seus fòssils. Van viure del Devonià mig al Devonià superior.
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Cladida is a major subgroup of crinoids with a complicated taxonomic history. Cladida was originally applied to a wide assortment of extinct crinoids with a dicyclcic calyx. Under this original definition, cladids would represent a paraphyletic order ancestral to several other major crinoid groups, particularly the living Articulata. More recently, Cladida has been redefined as a monophyletic parvclass of pentacrinoids which encompasses articulates and the extinct Flexibilia (flexibles). Cladids also include various minor taxa such as the and "". As flexibles were not originally considered cladids, the new subgroup Eucladida has been erected for cladids which are more derived than flexibles. Cladida is the sister group to Disparida, another large group of extinct crinoids.
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Les Cladida forment une sous-classe éteinte de crinoïdes.
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Cladida
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Clàdides
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Cladida
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Cladida
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38829145
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1113848487
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Moore and Laudon
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2
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Ulrichicrinus coryphaeus, a eucladid from the Mississippian-age Edwardsville Formation
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*†Porocrinoidea
*†Flexibilia
*Eucladida
**†Ampelocrinida
**†Cyathoformes
**Articulata
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Subgroups
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Cladida
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Els clàdides (Cladida) són una subclasse d'equinoderms de la classe Crinoidea coneguts només pels seus fòssils. Van viure del Devonià mig al Devonià superior.
rdf:langString
Cladida is a major subgroup of crinoids with a complicated taxonomic history. Cladida was originally applied to a wide assortment of extinct crinoids with a dicyclcic calyx. Under this original definition, cladids would represent a paraphyletic order ancestral to several other major crinoid groups, particularly the living Articulata. More recently, Cladida has been redefined as a monophyletic parvclass of pentacrinoids which encompasses articulates and the extinct Flexibilia (flexibles). Cladids also include various minor taxa such as the and "". As flexibles were not originally considered cladids, the new subgroup Eucladida has been erected for cladids which are more derived than flexibles. Cladida is the sister group to Disparida, another large group of extinct crinoids.
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Les Cladida forment une sous-classe éteinte de crinoïdes.
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10064