Corynexochidais an order oftrilobitethat lived from the LowerCambrianto the LateDevonian.Like many of the other trilobite orders, Corynexochida contains many species with widespread characteristics.
| Corynexochida | |
|---|---|
| |
| Lancastria elongata,from China. | |
Scientific classification
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | †Trilobita |
| Order: | †Corynexochida Kobayashi, 1935 |
| Suborders | |
The middle region of thecephalon(the glabella) is typically elongate, with the sides often spreading forward (pestle-shaped). Some species have glabellae that areeffaced,meaning they are smooth and show little detail. The glabellar furrows (when not effaced) typically have a splayed arrangement. In most species, the hind pair on either side of the cephalon become spines that point sharply backwards, and the spinose tips of the anterior pairs of thoracic segments tend to become more and more forward directed toward thepygidium.The eyes are typically large. Pygidia are typically large, competing in size with the cephalon in some species.
The tips of the thoracic segments of many Corynexochida species are spine-like (though in some species they are flush with the sides and smooth). The thorax can have 2-12 segments (rarely more), but they more typically have 7–8.
Taxonomy
editCorynexochina
editAbakania,Acontheus,Bonnaspis,Chatiania,Clavigellus,Corynexochella,Corynexochina,Corynexochus,Eochatiana,Eocorynexochus,Hartshillia,Hartshillina,Milaspis,Miranella,Olinaspis,Sanaschtykgolia,Shivelicus,Trinia.
Amginoerbia,Botomella,Chakasskia,Chakasskiella,Compsocephalus,Densocephalus,Dilataspis,Dinesus,Erbia,Erbiella,Erbina,Erbiopsidella,Erbiopsis,Ghwaiella,Paraerbia,Piriforma,Pokrovskiella,Proerbia,Pseudoerbia,Pseudoerbiopsis,Rondocephalus,Tingyuania,Tollaspis,Tumulina.
Acrocephalina,Alekcinella,Anemocephalus,Anuloides,Apachia,Bellaspidella,Bellaspis,Beothuckia,Burnetiella,Calocephalites,Chalfontia,Conaspis,Crusoiina,Deckera,Dellea,Delleana,Didwudina,Dokimocephalus,Fastigaspis,Glyptometopsis,Glyptometopus,Iddingsia,Jingxiania,Kindbladia,Kiowaia,Kyphocephalus,Lorrettina,Obrucheviaspis,Pinctus,Plakhinella,Pseudosaratogia,Puanella,Ritella,Saimachia,Sulcocephalus,Taenicephalina,Tatulaspis,Tchuostachia,Whittingtonella,Wilsonarella,Wuhuia,Yangweizhouia.
Aegunaspis,Amphoton,Anoria,Asperocare,Athabaskia,Athabaskiella,Atypicus,Basanellus,Bathyuriscidella,Bathyuriscus,Borovikovia,Centonella,Chilometopus,Chilonorria,Clavaspidella,Corynexochides,Deiradonyx,Dolicholeptus,Dolichometopsis,Dolichometopus,Drozdoviella,Erratobalticus,Ezhuangia,Fuchouia,Glossopleura,?Granularaspis,Guraspis,?Hanburia,Hemirhodon,Horonastes,Itydeois,Kannoriella,Klotziella,Lianhuashania,Mendospidella,Neopoliellina,Parapoliella,Poliella,Poliellaspidella,Poliellaspis,Poliellina,Politinella,Polypleuraspis,Prosymphysurus,Pseudamphoton,Ptannigania,Saimixiella,Sestrostega,Shanghaia,Sinijanella,Suvorovaaspis,Undillia,Zhenpingaspis.
Atdabanella,Basocephalus,Bonnaria,Bonnia,Bonniella,Bonnima,Bonnioides,Bonniopsis,Dorypygaspis,Dorypyge,Dorypygina,Dorypygoides,Duyunia,Fordaspis,Hicksia,Holteria,Holyoakia,Jiuquania,Kharausnurica,Kootenia,Kooteniella,Kooteniellina,Kootenina,Liokootenia,Mengzia,Metakootenia,Namiolenoides,Neolenus,Ogygopsis,Olenoides,Paraolenoides,Popigaia,Prokootenia,Protypus,Pulvillaspis,Rabutina,Saryaspis,Shipaiella,Strettonia,Tabatopygellina,Tadjikia,Tienzhuia,Tolanaspis.
Alacephalus,Edelsteinaspis,Gelasene,Keeleaspis,Labradoria,Labradorina,Laticephalus,Litaspis,Nehanniaspis,Neoredlichina,Nodiceps,Paleofossus,Polliaxis,Torosus,Venosus.
Argasalina,Bathyuriscellus,Bathyuriscopsis,Daldynia,Gibscherella,Jakutus,Janshinicus,Jucundaspis,Judaiella,Kobdus,Lenaspis,Malykania,Manaspis,Prouktaspis,Uktaspis,Vologdinaspis.
Arthricocephalus,Balangia,Barklyella,Cheiruroides,Curvoryctocephalus,Duodingia,Duyunaspis,Eoryctocephalus,Euarthricocephalus,Feilongshania,Haliplanktos,Hunanocephalus,Kunshanaspis,Lancastria,Metabalangia,Metarthricocephalus,Microryctocara,Neocheiruroides,Opsiosoryctocephalus,Oryctocara,Oryctocephalina,Oryctocephalites,Oryctocephaloides,Oryctocephalops,Oryctocephalus,Oryctometopus,Ovatoryctocara,Paleooryctocephalus,Parachangaspis,Paracheiruroides,Protoryctocephalus,Sandoveria,Shabaella,Tai gian gocephalus,Teljanzella,Tonkinella,Udjanella.
Albertella,Albertellina,Albertelloides,Chuchiaspis,Dan gian gella,Delamarina,Eozacanthoides,Fieldaspis,Mendogaspis,Mexicaspis,Micmaecopsis,Panxinella,Paralbertella,Parkaspis,Prozacanthoides,Pseudozacanthopsis,Ptarmiganoides,Qingzhenaspis,Stephenaspis,Thoracocare,Tianshanocephalus,Ursinella,Vanuxernella,Xuzhouia,Zacanthoides,Zacanthopsina,Zacanthopsis.
Illaeina
editAlloillaenus,Bumastoides,Dysplanus,Ectillaenus,Harpillaenus,Hyboaspis,Illaenus,Nanillaenus,Ninglangia,Octillaenus,Ordosaspis,Parillaenus,Platillaenus,Ptilillaenus,Quadratillaenus,Snajdria,Spinillaenus,Stenopareia,Trigoncekovia,Ulugtella,Vysocania,Wuchuanella,Zbirovia,Zdicella,Zetillaenus.
Hemibarrandia,Ottenbyaspis,Panderia,Pogrebovites.
Alceste,Altaepeltis,Amphoriops,Ancyropyge,Andegavia,Arctipeltis,Australoscutellum,Avascutellum,Bojoscutellum,Boreoscutellum,Breviscutellum,Bronteopsis,Brontocephalina,Brontocephalus,Bubupeltina,Bumastella,Bumastus,Calycoscutellum,Cavetia,Cekovia,Chichikaspis,Chugaevia,Ciliscutellum,Cornuscutellum,Craigheadia,Cybantyx,Decoroscutellum,Delgadoa,Dentaloscutellum,Dulanaspis,Ekwanoscutellum,Eobronteus,Eokosovopeltis,Eoscutellum,Exastipyx,Excetra,Failleana,Flexiscutellum,Goldillaenoides,Goldillaenus,Hallanta,Hidascutellum,Illaenoides,Illaenoscutellum,Izarnia,Japonoscutellum,Kirkdomina,Kobayashipeltis,Kolihapeltis,Kosovopeltis,Kotysopeltis,Lamproscutellum,Leioscutellum,Ligiscus,Liolalax,Litotix,Meitanillaenus,Meridioscutellum,Meroperix,Metascutellum,Microscutellum,Mulciberaspis,Neoscutellum,Octobronteus,Opoa,Ottoaspis,Paracybantyx,Paralejurus,Paraphillipsinella,Perischoclonus,Phillipsinella,Planiscutellum,Platyscutellum,Poroscutellum,Protobronteus,Protostygina,Pseudoeobronteus,Pseudostygina,Quyuania,Radioscutellum,Raymondaspis,Rhaxeros,Sangzhiscutellum,Scabriscutellum,Scutellum,Septimopeltis,Spiniscutellum,Stygina,Styginella,Tenuipeltis,Thaleops,Theamataspis,Thomastus,Thysanopeltella,Thysanopeltis,Tosacephalus,Turgicephalus,Unicapeltis,Uraloscutellum,Waisfeldaspis,Weberopeltis,Xyoeax.
Blandiaspis,Dictyella,Esseigania,Guluheia,Jiwangshania,Leiaspis,Lonchopygella,Paradictyites,Shergoldia,Taipaikia,Tsinania,Zhujia.
Leiostegiina
editAksayaspis,Cheilocephalus,Emsurella,Lecanoaspis,Macelloura,Oligometopus,Parakoldinia,Pseudokingstonia,Pseudokoldinia.
Ambonolium,Illaenurus,Lecanopyge,Minicephalus,Olenekella,Platydiamesus,Polyariella,Rasettaspis,Rasettia,Resseraspis,Tatonaspis,Yurakia.
Anhuiaspis,Ceronocare,Donggouia,Eokaolishania,Eoniansuyia,Eotingocephalus,Hapsidocare,Hemikaolishania,Kabutocrania,Kaolishania,Kaolishaniella,Liaotropis,Mansuyia,Mansuyites,?Mimana,Palacorona,Palemansuyia,Parakaolishania,Pararnansuyella,Peichiashania,Prolloydia,Shidiania,Taianocephalus,Tangjiaella,Tingocephalus,Tugurelluin,Wayaonia.
Aedotes,Aetho giường ia,Agerina,Alloleiostegium,Ampullatocephalina,Annamitella,Aspido giường ia,Baoshanaspis,Brackebuschia,Cholopilus,Chosenia,Chuangia,Chuangiella,Chuangina,Chuangioides,Chuangiopsis,Chuangites,Constrictella,Eo giường ia,Euleiostegium,Evansaspis,Gonicheirurus,Iranaspis,Irano giường ia,Jinanaspis,Kepisis,Leiostegium,Lepto giường ia,Lingu giường ia,Lloydia,Madaoyuites,Manitouella,Marcouella,Meropalla,Paraaojia,Paraleiostegium,Paraonychopyge,Paraszechuanella,Perischodory,Plethopeltella,Pseudocalymene,Pseudoleiostegium,Reubenella,Sailoma,Shanchengziella,Sobovaspis,Szechuanella,Tinaspis,Xinhuangaspis,Yaopuia,Yarmakaspis,Yin gian gia,Pro giường ia
Delinghaspis,Kontrastina,Nidanshania,Ordosia,Paralevisia,Plesioinouyella,Poshania,Pseudotaitzuia,Taitzuia,Taitzuina,Tylotaitzuia,Wanshania,Xundiania.
Arcifimbria,Bienella,Datsonia,Girandia,Idamea,Lichengaspis,Lotosoides,Oreadella,Pagodia,Pagodioides,Phoreotropis,Pro giường ia,Ptychopleurites,Sagitaspis,Sagitoides,Seletoides,Wittekindtia.
References
edit- Order Corynexochida- a site about the orders of trilobites.