Early Jurassic Subperiod
201.3 - 174.1 27.2

Hettangian Age 201.3 - 199.3 2 201.3 - 174.1 27.2 Mecochirus longimanatus, Europe 201.3 - 174.1 27.2 Sichuanobelus utatsuensis, Japan & China 201.3 - 174.1 27.2 Protosuchus richardsoni First crocodile Americas  201.3 - 174.1 27.2 Emausaurus ernsti Germany  201.3 - 174.1 27.2 Oxynoticeras oxynotum, Europe & N America  201.3 - 0 Rimicaris exoculata, Atlantic ocean, Least Concern 201.3 - 145 56.3 Equisetites aequecaliginosus Worldwide, Jurassic 201 - 0 Averostra, "bird snouts", most theropod  Two groups, Ceratosauria & 2 groups of Orionides in Coelurosauria, survived Cretaceous extinction orionideans , 1 subgroup of maniraptoriformes, Aves, survived. 201 - 185 16 Seitaad is a genus of sauropodomorph dinosaur which lived during the lower Jurassic period in what is now southern Utah, United States. 200 - 0  Dot-lined white Artace cribraria 200 - 0  Menelaus blue morpho, Morpho menelaus S & C America 200 - 0  Liomera rugata Indian ocean Least concern 200 - 183 17 Massospondylus carinatus Longer vertebra 200 - 0  Yellow-striped pygmy eleuth Eleutherodactylus limbatus Cuba Least Concern 200 - 0  La Palma glass frog Hyalinobatrachium valerioi C America  Least Concern 200 Seitaad ruessi Navajo sandstone USA  200 - 0  Common rain frog Breviceps adspersus S Africa Least Concern 200 - 0  Purple frog Nasikabatrachus sahyadrensis S India Endangered 200 - 195 5 Anchisaurus polyzelus lizard Portland formaiton USA  200 - 0  Australian green tree frog Litoria caerulea N Australia  Least Concern 200 - 0  Southern flannel moth Megalopyge opercularis C America  200 - 0  Madagascan sunset moth, Chrysiridia rhipheus, Madagascar   200 - 195 5 Anchisaurus is a genus of basal sauropodomorph dinosaur.[1] It lived during the Early Jurassic Period, and its fossils have been found in the red sandstone of the Portland Formation, 200 - 195 5 Ngwevu intloko (pronounced 'Ng-g'where-voo; directly from Xhosa 'ngwevu' and 'intloko' meaning "grey skull") is a genus of massospondylid sauropodomorph dinosaur from the Lower Jurassic Elliot Formation of South Africa. 200 - 191 9 Yizhousaurus is a genus of basal sauropodiform dinosaurs which existed in what is now Lower Lufeng Formation, Yunnan Province of southern China 200 - 195 5 Ledumahadi"a giant thunderclap"Sesotho languagegenus of lessemsaurid sauropodomorph dinosaur Elliot Formation in Free State Province, South Africa. 1 species known from 1 incomplete postcranial one of the first giant sauropodomorphs, 12 tonnes (26,000 lb), despite not having evolved columnar limbs like its later huge relatives.  L. mafube, 200 New Jersey Palisades  line of steep cliffs along the west side of the lower Hudson River in NE New Jersey and SE New York from Jersey City about 20 miles (32 km) to near Nyack, New York, and visible at Haverstraw, New York. 300 feet (90 m) high at Weehawken, increasing gradually to 540 feet (160 m) high near their northern terminus. Patcham Formation is a Mesozoic geologic formation of Patcham Island, India.  Chari Formation is a Mesozoic geologic formation in India.  Zhenzhuchong Formation is an Early Jurassic geologic formation in China. Plesiosaur remains are among the fossils that have been recovered from its strata. . Remains of the prosauropod Lufengosaurus huenei have been recovered from this formation  As well as dinosaur footprints.  201.3 Triassic–Jurassic (Tr-J) extinction event whole class(conodonts)  and 23–34% of marine genera disappeared. On land, all archosauromorphs other than crocodylomorphs, pterosaurs, and dinosaurs went extinct; some of the groups which died out were previously abundant, such as aetosaurs, phytosaurs, and rauisuchids 201 - 189 12 Bushveld Sandstone is a geological formation 201 Tritylodon (Greek for 3 cusped tooth) genus of tritylodonts, one of the most advanced group of cynodont therapsids. 201 - 0 Tetanurae  theropod dinosaurs,   megalosauroids, allosauroids, tyrannosauroids, ornithomimosaurs, maniraptorans, and birds.  Closer to modern birds than to sister Ceratosaurus Majority of predatory dinosaur diversity.   201 Atychodracon 200 Mammals; Triassic–Jurassic extinction event 200 - 190 10 Heterodontosaurus tucki "Different toothed lizard" Clarens formaiton S Africa Early Jurassic 201 - 193 8 Dilophosauridae Family 4-7m 3-500kg 200 - 20/14 180 Tethys Ocean. 200 Flinders Chase National Park S Australia located at the west end of Kangaroo Island  200 Pulanesaura is an extinct genus of basal sauropod known from the Early Jurassic (late Hettangian to Sinemurian) Upper Elliot Formation of the Free State, South Africa. It contains a single species, Pulanesaura eocollum, known from partial remains of at least two subadult to adult individuals. 200 proto-Amazon river. Oldest river bed. flowed in the opposite direction originated in the highland area that formed when the South American and African plates separated. may predate the break-up of western Gondwana as an extension of a proto-Congo river system 200 Red Rocks amphitheater 200 Sefapanosaurus herbivorous sauropodomorph S Gondwana 200 - 195 5 Pradhania is a genus of massospondylid sauropodomorph dinosaur from the Sinemurian-age (Early Jurassic) Upper Dharmaram Formation of India. 200 Ignavusaurus is a genus of basal sauropodomorph dinosaur that lived during the Early Jurassic in what is now Lesotho. Its fossils were found in the Upper Elliot Formation which is probably Hettangian in age (around 200 million years ago). It was described on the basis of a partial, well preserved articulated skeleton. The type species, I. rachelis,  200 - 0 Violin beetle Mormolyce phyllodes SE Asia Kayentatherium genus of tritylodontid cynodonts that lived during the Early Jurassic. It is one of two tritylodonts from the Kayenta Formation of northern Arizona, United States. 200 - 195 5 Anchisaurus  genus of basal sauropodomorph dinosaur red sandstone of the Portland Formation 2m/6'6"  27 kg/60lb.  Ammosaurus  2.5-4m 8'2"-13'1"  200 - 183 17 Adeopapposaurus "far eating lizard", Prosauropod dinosaur, Cañón del Colorado Formation of San Juan, Argentina. Like Massospondylus. 4 partial skeletons w/ 2 partial skulls. 200 - 183 17 Massospondylus, "longer"  sauropodomorph dinosaur 1st dinosaurs named. S Africa, Lesotho, and Zimbabwe. 1854 200 - 66 34 Ammonitida highly evolved ammonoid cephalopods four suborders, the Phylloceratina, Lytoceratina, Ancyloceratina, and Ammonitina. The Phylloceratina is the ancestral stock, derived from the Ceratitida near the end of the Triassic. The Phylloceratina gave rise to the Lytoceratina near the beginning of the Jurassic which in turn gave rise to the highly specialized Ancyloceratina near the end of the Jurassic. Both the Phylloceratina and Lytoceratina gave rise to various stocks combined in the Ammonitina. 200 Antetonitrus  genus of sauropod dinosaur  Elliot Formation of South Africa. 1 species  As one of the oldest known sauropods, it is crucial for the understanding of the origin and early evolution of this group. It was a quadrupedal herbivore, like all of its later relatives, but shows primitive adaptations to use the forelimbs for grasping, instead of purely for weight support  Antetonitrus ingenipes. 199.6 - 175.6 24 Eocaecilia micropodia Dawn caecilia Arizona N America

Sinemurian Age 199.3 - 190.8 8.5 199 - 0 Armadillo girdled lizard, Ouroborus catanhractus Western S America Least concern 199 - 188 11 Vulcanodon "volcano tooth" genus of sauropod dinosaur S Africa. 199 - 195 4  Portland Formation geological formation  NE USA 199 - 6 3 Abrictosaurus 199 Leonerasaurus is a basal genus of sauropodomorph dinosaur. one species   L. taquetrensis 199.6 - 66 133.6 Thyreophora 199.6 - 66 133.6 Eocursor  Thyrapod Lower Elliot formation South Africa. Ancestor of Stegasaurus Triceratops, Iguanadon 199.3 - 66 23.3 Ceratosaurs Thyrapod 199 - 189 10 Lesothosaurus diagnosticus Lizard Upper Elliot formaiton Lesotho 199 - 0 Jaragua dwarf gecko Sphaerodactylus ariacae Dominican Republic Vulnerable 199 - 0 Satanic leaf-tailed gecko Uroplatus phantasticus N Madagascar Least concern 199 - 0 Bobrtail Skink Tiliqua rugosa Australia Least concern 199 flood basalts C Atlantic magmatic province 199 - 189 10 Lesothosaurus diagnosticus Lesothosaurus  genus  Thyrapod  South Africa and Upper Elliot formation Lesotho 196 - 189 7 Yunnanodon "Yunnan tooth",  China's Yunnan province genus of non-mammalian therapsids tritylodont, it represents one of the few non-mammalian therapsids to survive the Triassic–Jurassic extinction event. skulls 36 to 47mm (1.4 to 1.8 inches)

Early Jurassic Subperiod
201.3 - 174.1 27.2

Sinemurian Age 199.3 - 190.8 8.5 196.5 - 183 13.5 Scelidosaurus Charmouth  in Dorset, Engl& 194 - 88 6 Cryolophosaurus 197 Lycorhinus 197 - 190 7  Lufeng Formation Yunnan, China.  196.5 - 189.6 6.9 Echioceras raricostatum Europe & N America 196.5 - 66 130.5 Gravisauria  sauropod dinosaurs consisting of some genera, Vulcanodontidae and Eusauropoda. 196.5 - 183 13.5 Scelidosaurus harrisonii Limb lizard England 196 Scutellosaurus lawleri Little-shielded lizard Kayenta formation USA 196 Scutellosaurus ? Ichthyosaurus, Leptonectes, Bienotherium, Geranosaurus, Lusitanosaurus, Tatisaurus, Eretmosaurus 195 - 190 5 Dimorphodon macronyx Two shapes tooth NW Europe 195 Hadrocodium 195 Aardonyx basal sauropodomorph dinosaur.   Aardonyx celestae Lower Jurassic Elliot Formation S Africa. 195 Xingxiulong "Xingxiu Bridge dragon" genus bipedal  sauropodiform China. 195 - 185 10  Kayenta Formation is a geologic layer in the Glen Canyon Group that is spread across the Colorado Plateau province of the United States, including northern Arizona, northwest Colorado, Nevada, and Utah. 194 - 188 6 Cryolophosaurus Antarctica. 194 - 135 59 Penultimate Glacial Period 220 - 195 25 Kuehneotherium 190 Merosaurus 199.6 - 75.6 124 Plesiosaurus 193 Dilophosaurus 193 Dilophosaurus northern Arizona 194 Sarcosaurus 199.3 - 197.5 101.8 Saltriovenator 201 - 196 5 Sinosaurus 197 - 90 7 Bienosaurus 194 - 188 6 Cryolophosaurus ellioti Frozen crested lizard Hanson formaiton Antarctica Early Jurassic 193 Dilophosaurus D. wetherilli "Two-crested lizard" Dilophosaurus, Dilophosauridae, Theropoda, Saurischia, Dinosaruia, Kayenta formation USA 251.902 - 66 185.902 Kaladongar Formation Mesozoic geologic formation of the Kachchh basin. It is found in Patcham Island, Kachchh, Gujarat, India. It is made up of limestone and sandstone. It was later intruded by an olivine gabbroic intrusion which baked and shattered the overlying Limestone.

Early Jurassic Subperiod
201.3 - 174.1 27.2

Sinemurian Age 199.3 - 190.8 8.5 Calizas de Lychnus Formation is a Mesozoic geologic formation in northern central Spain. Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation

Pliensbachian Age 190.8 - 182.7 8.1 190 - 0 Chinese pond turtle, Mauremys reevesii, E Asia, Endangered 190 - 0 Big-headed turtle, Platysternon megacephalum, Madagascar, Endangered 190 - 0 Alligator snapping turtle, Macrochelys temminckii, USA Vulnerable 190 - 0 Thorny devil, Moloch horridus, Australia  Least concern 190 - 0 Philippine sailfin lizard Hydrosaurus pustulatus Philipines Vulnerable 190 - 0 Sulawesi lined gliding lizard, Draco spilonotus, Sulawesi island Near threatened 190 - 0 Desert horned lizard, Phrynosoma platyrhinas, W&N America Least concern 190 - 0 Frilled-neck lizard, Chlamydosaurus kingii Least concern 190 Lufengosaurus huenei Lufeng lizard Lower Lufeng formation China 190 Yimenosaurus meaning "Yiman reptile" plateosaurid  sauropodomorph dinosaur China 190 Lufengosaurus "Lufeng lizard" genus of massospondylid dino SW China 195 MYA collagen in rib 189.6 - 175.6 14 Siderops kehli Australia 189.6 - 0 Lamellibrachia luymesi, Gulf of Mexico, Least concern 189.6 - 0 Giant tube worm, Riftia pachyptila, Pacific ocean,   Least concern Amaltheus is an oxyconic ammonite with a fairly open umbilicus, serrated keel, and slightly sigmoidal ribs 196 - 189 6 Obsuse star ammonite, Asteroceras obtusum, Eurasia 189 - 183 6 Glacialisaurus hammeri Frozen lizard Hanson fomration Antarctica   189 - 183 6 Pleuroceras spinatum species of ammonite fast-moving nektoniccarnivore. Shell of Pleuroceras spinatum can reach a diameter of about 45–54 millimetres (1.8–2.1 in). France, Germany, Hungary, Italy, Serbia and Montenegro, Spain and United Kingdom The Wave is a sandstone rock formation located in Arizona, United States, near its northern border with Utah. The formation is situated on the slopes of the Coyote Buttes in the Paria Canyon-Vermilion Cliffs Wilderness of the Colorado Plateau.  190 - 0  Giant malaysian stick mantis Paratoxodera cornicollis Indonesia 190 Coyote Buttes Dinosaur Tracks 1K+ footprints is a section of the Paria Canyon-Vermilion Cliffs Wilderness managed by the Bureau of Land Management (BLM), spanning extreme south-central Utah and north-central Arizona,  Eubrontes, Anchisauripus and Grallator are present along with a Sauropodomorph 190 - 182 8 Clarens Formation is a geological formation found in several localities in Lesotho and in the Free State, KwaZulu-Natal, and Eastern Cape provinces in South Africa. It is the uppermost of the three formations found in the Stormberg Group of the greater Karoo Supergroup rocks and represents the final phase of preserved sedimentation of the Karoo Basin.[ 189 - 83 6 Glacialisaurus is a genus of massospondylid sauropodomorph dinosaur. C Transantarctic Mountains of Antarctica.  partial hind limb & left femur.

Early Jurassic Subperiod
201.3 - 174.1 27.2

Pliensbachian Age 190.8 - 182.7 8.1 183 - 176 7 Whitby Mudstone is a Toarcian geological formation part of the Lias Group, is present in the Cleveland and Worcester Basins and the East Midlands Shelf. Yorkshire and Worcestershire, England. 183  Karoo and Ferrar Large Igneous Provinces (LIPs) are two large igneous provinces in Southern Africa  and Antarctica associated with the initial break-up of the Gondwana supercontinentIts flood basalt mostly covers South Africa and Antarctica but portions extend further into southern Africa and into South America, India, Australia and New Zealand. 183  Toarcian turnover wave of extinctions that marked the end of the Pliensbachian age and the start of the Toarcian age most strongly affected marine life, notably mollusks (like ammonites, belemnites, gastropods, and bivalves), radiolarians, foraminifera, calcareous nannoplankton, brachiopods, ostracods, crinoids, crustaceans, marine reptiles, and fish. warming climate, the spread of anoxiain the oceans, and ocean acidifcation linked in turn to the massive volcanism of the Karoo-Ferrar eruptions 7th-largest mass extinction in Earth's history. 183 Sarahsaurus  genus of basal sauropodomorph dinosaur NE Arizona, USA 183 - 163 20 Steneosaurus bollensis Narrow lizard Europe and Morocco   Ziliujing Formation part of the stratigraphy of the Sichuan Basin.  dinosaur Gongxianosaurus and indeterminate theropod material are known from the Dongyuemiao Member of the formation, as well as dinosaur footprints, Zizhongosaurus and indeterminate prosauropods from the Daanzhai Member 183 - 175.6 7.4 Rhomaleosaurus 183 - 174 9 Gongxianosaurus is a genus of basal sauropod dinosaur 183 - 79 4 Stenopterygius 183 - 76 107 Peipehsuchus 183 - 76 107 Pelagosaurus 183 - 76 107 Platysuchus 183 - 63 120 Steneosaurus 183 - 175 8 sauropod dinosaurs Zizhongosaurus, Barapasaurus, Tazoudasaurus, and Vulcanodon may form a natural group of basal sauropods called the Vulcanodontidae.  182 - 0 Necklace starfish, Fromia monilis, Indian ocean, Near threatened

Toarcian Age 182.7 - 174.1 8.6 ? Emausaurus, Microcleidus, Seeleyosaurus 182 - 145 37 Trigonia signicollina, Thailand & New Zealand Jurassic 180.3 - 94 86.3 Lepidotes gigas Europe