Mesozoic Era
251.9 - 66 185.9
Triassic Period
251.9 - 201 50.9
Middle Triassic
247.2 - 237 10.2
Ladinian Age
242 - 237 5
mi 242 - 37 5 Batrachotomus
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 _ Abyssal fish/25 Northern stoplight loosejaw, Malacosteus niger, N Pacific & Atnaltic oceans depths 500 - 1,500 m, Present Least concern .png)  _ Abyssal fish/25 Northern stoplight loosejaw, Malacosteus niger, N Pacific & Atnaltic oceans depths 500 - 1,500m, 240 - Present Least concern .png) 240 - 0 N stoplight loosejaw, Malacosteus niger, 500 - 1,500m, N Pacific & Atlantic Least concern |
240  Rhine river Germany 6th oldest |
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Late Triassic Period
237 - 201.3 35.7
Carnian Age
237 - 227 10
 _ Ancient Actinopterygii/1 Dapedium politum, Late Triassic - Early Jurassic, N America & Eurasia.png)  _ Ancient Actinopterygii/1 Dapedium politum, Late Triassic 237 - 175 Early Jurassic, N America & Eurasia.png) 237 - 175 62 Dapedium politum N America & Eurasia |
  237 - 201.3 35.7 Traversodon stahleckeri Sao Pedro do Sul Brazil |
 _ stick insect, mantis, cicada 🦗/19 Pharoah cicada Magicicada septendecim N America Present.png)  _ stick insect, mantis, cicada 🦗/19 Pharoah cicada Magicicada septendecim N America 237 - Present.png) 237 - 0 Pharoah cicada Magicicada septendecim N America |
  237 - 201.3 35.7 Terrestrisuchus gracilis Land crocodile British Isles England Late Triassic |
  237 - 201.3 35.7 Aetosaurus ferrtus Eagle lizard Germany & Italy |
  237 - 201.3 35.7 Cyclotosaurus robustus Round eared lizard
Germany & Poland |
  237 - 201.3 35.7 Neomegalodon cornutus, Eurasia |
  237 - 201.3 35.7 Longosuchus meadei Long crocodile
Morocco & USA |
237 - 216 21 Proterochampsidae family proterochampsian archosauriforms.
Crocodile Niche S America |
  237 - 201.3 35.7 Lisowicia bojani Lisowice's one Silesia Poland |
  237 - 163.5 73.5 Morganucodon watsoni Glamorgan tooth Glamorgan Wales |
  237 - 174.1 62.9 Oligokyphus triserialis Small curved animal Kayenta F USA |
  237 - 174.1 62.9 Megazostrodon rudnerae Large girde tooth
S Africa & Lesotho |
  236 - 234 12 Lagosuchus talampayensis Rabbit crocodile Chanares formation Argentina |
 _ ant, bee, beetle 🐞/8 Camponotus saundersi SE Asia Present .png)  _ ant, bee, beetle 🐞/8 Camponotus saundersi SE Asia 235 - Present .png) 235 - 0 Camponotus saundersi SE Asia |
  235 - 205.6 29.4 Exaeretodon argentinus Ischigualasto formation Arg & Santa Maria formaiton Brazil & India |
  235 - 221.5 13.5 Probainognathus jenseni Progressive jaw Chanares formation Argentina |
  235 - 210 25 Chindesaurus bryansmalli Evil spirit lizard
Tecovas formation SW USA |
  235 - 228 7 Ornithosuchus woodwardi Bird crocodiles Scotland |
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Mesozoic Era
251.9 - 66 185.9
Triassic Period
251.9 - 201 50.9
Late Triassic Period
237 - 201.3 35.7
Carnian Age
237 - 227 10
  233.2 Staurikosaurus pricei S Cross lizard
Santa Maria formation S Brazil |
| 233.3 - 0 Saurischia lizard - hipped 1/2 Dinosaur clades |
233.23 - 0 Dinosaur reptiles clade Dinosauria. dominant terrestrial vertebrates after 201.3 MYA extinction
1  Avian bird
2  Non-Avian Crocodile |
| 235 - 210 25 Herrerasaurus Herrerasauridae family San Juan, Argentina Saurischia |
| 232 - 222 10 Prozostrodon genus advanced cynodonts close to mammal ancestors |
  231.7 - 225 6.7 Venaticosuchus rusconii
Ischigualaasto formation Arg |
  231.4 9Sp Saurosuchus galilei Lizard crocodile Ischigualasto formation Argentina |
  231.4 Ischigualastia jenseni Ischigualato formation Argentina |
  231.4 Herrerasaurus ischigualastensis Herrera's lizard
Ischigualasto formation Argentina |
  231.4 - 229 2.4 Eodromaeus murphi Dawn runner Ischigualasto formation Argentina |
| 231.4 - 203 28.4 Aetosaurs, Aetosauria eagle lizard order heavily armoured, M-L size herbivorous archosaurs. small heads, upturned snouts, erect limbs, covered by plate-like scutes. family Stagonolepididae. |
| 231.4 - 0 Theropoda hollow bones & three-toed limbs Saurischia |
201.3 - 174.1 27.2   Metopacantus granulatus Europe |
  231 - 228 3 Eoraptor lunensis Dawn plunderer Ischigualasto formation Argentina |
  231 Panphagia protos Eater of all Ischigualasto formaiton Argentina |
/3 Dilobopyga gemina E Australia Present Least concern.png) /3 Dilobopyga gemina E Australia 230 - Present Least concern.png) 230 - 0 Dilobopyga gemina E Australia Least concern |
  230 4Sp Silesaurus opolensis silesia lizard Silesia Poland |
  230 - 200 30 Gerrothorax pulcherrimus Wicker chest Triassic |
  230 - 0 Common yellow-banded caecilian Ichthyophis glutinosus Least concern |
| 230 Belogradchik Rocks Bulgaria |
| 230 Moenkopi Formation sea withdrew, fluvial, mudflat, sabkha, shallow marine life: gypsum, mudstone, limestone, sandstone, shale, siltstone 1000s layers sediment. monsoonal, wet-dry. 550m/1,800' thick |
| 230 mi Portland Arch Nature Preserve 435Ac/1.76km2 Indiana, USA |
| 237 - 208.5 28.5 Saurosuchus, Herrerasaurus |
| 228 - 27 1 Staurikosaurus |
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Mesozoic Era
251.9 - 66 185.9
Triassic Period
251.9 - 201 50.9
Late Triassic Period
237 - 201.3 35.7
Carnian Age
237 - 227 10
  228 - 220 8 Henodus chelyops Turtle-faced single tooth Tubingen, Germany |
  228 - 203.6 224.4 Scleromochlus taylori Hard fulcrum Lossiemouth Sandstone, Scotland |
  228 Preondactylus bufarinii Preone fingers Italian Alps |
  228 Icarosaurus siefkeri Icarus lizard Lockatong formation E USA |
  228 - 210 18 Desmatosuchus spurensis Link crocodile USA |
  228 Saltopus elginensis Hopping foot
Lossiemouth sandstone form. Scotland |
  228 - 216.5 11.5 Pisanosaurus mertii Pisano's lizard
Ischigulasto formation Arg |
 
228 - 208.5 19.5 Lessemsaurus sauropoides Don Lessem lizard Los Colorados form. Arg |
| mi 228 - 208 20 Eucoelophysis true hollow form dinosauriform sister to Dinosauria, Silesaurus next most basal taxon Chinle Formation NM |
| 228 - 66 162 Pterosaurs order Pterosauria. 1st Fying vertebrate. wings skin membranes, muscle from ankles to long 4th finger |
| 228 - 213 15 Riojasauridae family sauropod-like. primarily genera Riojasaurus & Eucnemesaurus. Lower Elliot Formation Orange Free State, S Af (Eucnemesaurus), & Ischigualasto La Rioja Province, Arg (Riojasaurushave) |
| 228 - 208.5 9.5 Brasilodon Brazil tooth genus cynodonts |
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Norian Age
227 - 208.5 18.5
| 228 - 208.5 9.5 Lessemsaurus sauropod Lessemsauridae |
  227 - 216.5 10.5 Metoposaurus diagnosticus Front lizard W Eur |
  225.42 Guaibasaurus candelariensis Guaiba lizard Caturrita formation S Brazil |
  225.4 Unaysaurus tolentinoi Black water lizard Caturrita formaiton S Brazil |
  225 - 209.5 15.5 Revueltosaurus callenderi Revuelto lizard USA |
  225 Adelobasileus cromptoni Obscure king
Tecovas formation USA |
| 225 Petrified Forest National Park |
225 Riograndia genus tritheledontid cynodonts 1Sp S America.
Defines Riograndia Assemblage Zone
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| Synostocephalus non-mammalian synapsid. |
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Mesozoic Era
251.9 - 66 185.9
Triassic Period
251.9 - 201 50.9
Late Triassic Period
237 - 201.3 35.7
Norian Age
227 - 208.5 18.5
  221.5 - 205.6 16 Placochelys placodonta Flat toothed flat-plate turtle Europe |
  221 - 206 15 Stagonolepis robertsoni Ornamented scale Germany, Poland, England & USA |
  221 - 206 15 Zupaysaurus rougieri Devil lizard theropod Los Colorado formation Argentina |
| 221 - 183 38 Coelophysoidea Superfamily |
  220 Odontochelys semitestacea Toothed turtle half - shell guizhou province, China |
  220 - 185 35 Eocursor parvus Dawn runner Lower Elliot formation S Africa |
  220 - 216 4 Placerias hesternus Broad body W&N America |
| 220 Arctotraversodon traversodontid cynodonts Canada. Wolfville Formation Nova Scotia 1984 1st traversodontid N Am |
  220 Hesperosuchus agilis W crocodile USA |
 
216.5 - 201 15.5 Melanorosaurus readi Black mountain lizard
Elliet formation S Africa |
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Mesozoic Era
251.9 - 66 185.9
Triassic Period
251.9 - 201 50.9
Late Triassic Period
237 - 201.3 35.7
Norian Age
227 - 208.5 18.5
  216 - 199.6 16.4 Paratypothorax andressorum Beside print thorax Germany, Greenland & USA |
| 216 Diodorus genus silesaurid dinosauriform Timezgadiouine Formation Argana Basin Morocco |
| 216 - 203 13 Ruehleiasauropodomorph Germany |
  216 - 196 20 Coelophysis genus 3/9.8ft SW USA, S Africa, Zimbabwe Coelophysoidea Superfamily
| 216 - 196 20 5Sp Coelophysis bauri Hollow N Mexico N Am |
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  215 Austriadactylus cristatus austria dactylus Seefelder beds, Austria |
  215.6 - 201.6 14 Kuehneosaurus latus Kuehne lizard England & Luxemburg |
| 215 Maubeugia genus of traversodontid cynodonts NE France
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| 215 - 203 12 Mussaurus mouse lizard genus herbivorous sauropodomorph |
| 215 - 190 25 Lessemsauridae clade early sauropod Arg, S Af |
  215 - 203 12 Mussaurus patagonicus Mouse lizard El Tranquilo formation Arg |
 
214 - 204 10 Plateosaurus engelhardti Broad lizard C & Black forest Ger, Greenland, N Am |
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