- Source: Cladida
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 dicyclic 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 hybocrinids and "cyathocrines". 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.
Taxonomy
Parvclass Cladida
Superorder †Porocrinoidea
Order †Hybocrinida
Order †Porocrinida
Superorder †Flexibilia
Order †Sagenocrinida
Order †Taxocrinida
Magnorder Eucladida
†Ampelocrinida (incertae sedis)
Superorder †Cyathoformes ("primitive cladids")
†"Cyathocrinida"
†"Dendrocrinida" [in part]
†Poteriocrinites
Articuliformes ("intermediate and advanced cladids")
†"Poteriocrinida" [in part]
†"Dendrocrinida" [in part]
Superorder Articulata
Order †Encrinida
Order †Holocrinida
Order †Millericrinida
Order †Roveacrinida
Order †Uintacrinida
Order Comatulida
Order Cyrtocrinida
Order Hyocrinida
Order Isocrinida
List of genera
Aaglacrinus
Aatocrinus
Abrachiocrinus
Acariaiocrinus
Achradocrinus
Acylocrinus
Adinocrinus
Aenigmocrinus
Agassizocrinacea
Agassizocrinoidea
Agassizocrinus
Aithriocrinus
Alcimocrinus
Allosycocrinus
Alsopocrinus
Ampelocrinida
Ampheristocrinus
Amphipsalidocrinus
Anarchocrinus
Anartiocrinus
Ancyrocrinus
Anemetocrinus
Antihomocrinus
Apektocrinidae
Arachnocrinus
Araeocrinus
Armenocrinus
Ascetocrinus
Asymmetrocrinus
Atelestocrinus
Atractocrinus
Atrapocrinus
Atremacrinus
Aulocrinus
Aulodesocrinus
Bactrocrinites
Basleocrinus
Bathericrinus
Belanskicrinus
Benthocrinus
Bicidiocrinus
Bolbocrinus
Bollandocrinus
Botryocrinidae
Brabeocrinus
Briseocrinus
Bronaughocrinus
Brychiocrinus
Bursacrinus
Cadocrinus
Caelocrinus
Carcinocrinus
Carlopsocrinus
Cathetocrinus
Ceratocrinus
Cercidocrinus
Cestocrinus
Clathrocrinus
Clistocrinus
Codiacrinus
Coenocystis
Contignatindocrinus
Corematocrinus
Corynecrinus
Corythocrinus
Cradeocrinus
Cranocrinus
Cricocrinus
Cromyocrinacea
Cromyocrinus
Crotalocrinites
Cryphiocrinus
Culmicrinus
Cyathocrinacea
Cydrocrinus
Cyliocrinus
Dasciocrinus
Denariocrinus
Dendrocrinina
Depaocrinus
Derbiocrinus
Dichostreblocrinus
Dictenocrinus
Dinotocrinus
Edapocrinus
Eifelocrinus
Eirmocrinus
Elicrinus
Enallocrinus
Eopilidiocrinus
Epipetschoracrinus
Eratocrinus
Ethelocrinus
Eucladida
Euerisocrinus
Eupachycrinus
Euspirocrinus
Exaetocrinus
Exochocrinus
Exoriocrinus
Exterocrinus
Fifeocrinus
Flexibilia
Follicrinus
Forthocrinus
Gastrocrinus
Goniocrinus
Gothocrinus
Hallocrinus
Harmostocrinus
Harrellicrinus
Hemiindocrinus
Hemimollocrinus
Hemistreptacron
Holcocrinus
Hosieocrinus
Hydreionocrinus
Hydriocrinus
Hydroporocrinus
Hylodecrinus
Idaeumocrinus
Idosocrinus
Imitatocrinus
Indocrinus
Intermediacrinus
Jahnocrinus
Kalpidocrinus
Kanabinocrinus
Kansacrinus
Kooptoonocrinus
Kopficrinus
Kophinocrinus
Laccocrinus
Lageniocrinus
Lanecrinus
Lasiocrinus
Laudonocrinus
Lebetocrinus
Lecythocrinus
Lekocrinus
Linobrachiocrinus
Linocrinus
Lobalocrinus
Lopadiocrinus
Lophocrinacea
Lophocrinus
Malaiocrinus
Manicrinus
Mantikosocrinus
Maragnicrinus
Marathonocrinus
Mathericrinus
Menniscocrinus
Metaffinocrinus
Metasycocrinus
Miatschkovocrinus
Mictocrinus
Moapocrinus
Mollocrinus
Monobrachiocrinus
Mooreocrinus
Moscovicrinus
Myrtillocrinus
Nacocrinus
Nactocrinus
Nanocrinus
Nassoviocrinus
Neocatacrinus
Neolageniocrinus
Nereocrinus
Notiocrinus
Nuxocrinus
Oligobrachyocrinus
Ophiurocrinus
Oxynocrinus
Pagecrinus
Paianocrinus
Parabotryocrinus
Paracosmetocrinus
Paracydonocrinus
Paradelocrinus
Paragraphiocrinus
Parapernerocrinus
Paraplasocrinus
Parascytalocrinus
Parastachyocrinus
Parastephanocrinus
Parasycocrinus
Paratimorocidaris
Parazeacrinites
Parindocrinus
Parisangulocrinus
Parisocrinus
Pegocrinus
Pelecocrinus
Pellecrinus
Pentaramicrinus
Pentececrinus
Permiocrinus
Pernerocrinus
Petalambicrinus
Petschoracrinus
Phanocrinus
Pilidiocrinus
Pirasocrinus
Platyfundocrinus
Polygonocrinus
Porocrinoidea
Poteriocrinitina
Premanicrinus
Prininocrinus
Proampelocrinus
Probletocrinus
Prochoidiocrinus
Proctothylacocrinus
Proindocrinus
Prolobocrinus
Psilocrinus
Pskovicrinus
Pulaskicrinus
Pumilindocrinus
Pyrenocrinus
Ramulocrinus
Retusocrinus
Rhabdocrinus
Rhadinocrinus
Rhenocrinus
Rhopalocrinus
Rhopocrinus
Rimosidocrinus
Roemerocrinus
Saccosompsis
Sardinocrinus
Sarocrinus
Scammatocrinus
Schedexocrinus
Schistocrinus
Schultzicrinus
Scoliocrinus
Scotiacrinus
Sellardsicrinus
Separocrinus
Sigambrocrinus
Simocrinus
Sphaerocrinus
Springericrinus
Stachyocrinus
Staphylocrinus
Stinocrinus
Streblocrinus
Streptocrinus
Sublobalocrinus
Sycocrinites
Syndetocrinus
Tarachiocrinus
Telikosocrinus
Tenagocrinus
Terpnocrinus
Tetrabrachiocrinus
Tetrapleurocrinus
Texacrinacea
Thalamocrinus
Thenarocrinus
Thetidicrinus
Tholocrinus
Thyridocrinus
Timorechinus
Treocrinus
Trimerocrinus
Tyrieocrinus
Ulrichicrinus
Ureocrinus
Vasocrinus
Wetherbyocrinus
Woodocrinus
Worthenocrinus
Yakovlevicrinus
Zeacrinitacea
Zeacrinites
Zeusocrinus
Zostocrinus
Zygotocrinus
References
External links
Cladida in the Paleobiology Database