
Mononykus olecranus - 80 to 70 million years ago
Mononykus had a remarkable feature: it possessed only one finger on each arm. Its arms were so small that it could not reach its face. However, Mononykus had two large claws on its fingers and may have used them to break open termite mounds.
01 Permian-Triassic extinction Lystrosaurus curvatus Hupehsuchus nanchangensis Arizonasaurus babbitti Prestosuchus chiniquensis Shringasaurus indicus Shonisaurus popularis Eoraptor lunensis Coelophysis bauri Desmatosuchus haplocerus Herrerasaurus ischigualastensis Appearance of Mammals Peteinosaurus zambellii Plateosaurus engelhardti Eudimorphodon ranzii Older Turtles Jurassic extinction Dimorphodon macronyx Anchisaurus polyzelus Eurhinosaurus longirostris Massospondylus carinatus Dilophosaurus wetherilli Scutellosaurus lawleri Oldest dinosaur nests Cryolophosaurus ellioti Segisaurus halli Dorygnathus banthensis Megalosaurus bucklandii Huayangosaurus taibaii Spinophorosaurus nigerensis Cetiosaurus oxoniensis Proceratosaurus Omeisaurus tianfuensis Monolophosaurus jiangi Shunosaurus lii Atlasaurus imelakei Gigantspinosaurus sichuanensis Kentrosaurus aethiopicus Sordes pilosus Giraffatitan brancai Mamenchisaurus hochuanensis Jobaria tiguidensis Liopleurodon ferox Camptosaurus dispar Ornitholestes hermanni Apatosaurus excelsus Archaeopteryx lithographica Camarasaurus supremus Diplodocus longus Stegosaurus armatus Rhamphorhynchus muensteri Allosaurus fragilis Brachiosaurus brancai Ceratosaurus nasicornis Dicraeosaurus hansemanni Europasaurus holgeri Yangchuanosaurus shangyouensis Torvosaurus tanneri Compsognathus longipes Juravenator starki Gargoyleosaurus parkpinorum Miragaia longicollum Brachytrachelopan mesai Barosaurus lentus Pterodactylus antiquus Psittacosaurus mongoliensis Oldest spider web Iguanodon bernissartensis Wuerhosaurus homheni Amargasaurus cazaui Utahraptor ostrommaysorum Dilong paradoxus Polacanthus foxii Concavenator corcovatus Baryonyx walkeri Beipiaosaurus inexpectus Microraptor zhaoianus Pelecanimimus polyodon Kronosaurus queenslandicus Archaeoceratops oshimai Hypsilophodon foxii Zhenyuanopterus longirostris Altirhinus kurzanovi Ichthyovenator laosensis Malawisaurus dixeyi Caudipteryx dongi Acrocanthosaurus atokensis Irritator challengeri Anhanguera blittersdorffi Lurdusaurus arenatus Tyrannotitan chubutensis Dsungaripterus weii Suchomimus tenerensis Tenontosaurus tilletti Birds Lose Their Teeth Deinonychus antirrhopus Sauropelta edwardsorum Agustinia ligabuei Giganotosaurus carolinii Spinosaurus aegyptiacus Ouranosaurus nigeriensis Tapejara wellnhoferi Sarcosuchus imperator Sauroposeidon proteles Brontomerus mcintoshi Thalassodromeus sethi Nigersaurus taqueti Shuangmiaosaurus gilmorei Pterodaustro guinazui Carcharodontosaurus saharicus Argentinosaurus huinculensis Kaprosuchus saharicus Diamantinasaurus matildae Talarurus plicatospineus Mapusaurus roseae Rugops primus Deltadromeus agilis Zuniceratops christopheri Tsagantegia longicranialis Crichtonsaurus bohlini Hungarosaurus tormai Gigantoraptor erlianensis Styxosaurus snowii Velociraptor mongoliensis Aucasaurus garridoi Elasmosaurus platyurus Coahuilaceratops magnacuerna Protoceratops andrewsi Achelousaurus horneri Abelisaurus comahuensis Albertaceratops nesmoi Chasmosaurus belli Agujaceratops mariscalensis Zhejiangopterus linhaiensis Citipati osmolskae Dolichorhynchops osborni Maiasaura peeblesorum Mononykus olecranus Udanoceratops tschizhovi Daspletosaurus torosus Brachylophosaurus canadensis Lambeosaurus lambei Nasutoceratops titusi Parasaurolophus tubicen Euoplocephalus tutus Styracosaurus albertensis Centrosaurus apertus Stegoceras validum Antarctopelta oliveroi Bistahieversor sealeyi Corythosaurus casuarius Diabloceratops eatoni Pachycephalosaurus wyomingensis Pentaceratops sternbergii Troodon formosus Tylosaurus proriger Rubeosaurus ovatus Albertosaurus sarcophagus Einiosaurus procurvicornis Carnotaurus sastrei Anchiceratops ornatus Saltasaurus loricatus Velafrons coahuilensis Masiakasaurus knopfleri Bravoceratops polyphemus Nedoceratops hatcheri Edmontosaurus annectens Uberabatitan riberoi Alioramus remotus Homalocephale calathocercos Austroraptor cabazai Alamosaurus sanjuanensis Ampelosaurus atacis Dracorex hogwartsia Gallimimus bullatus Olorotitan arharensis Pteranodon longiceps Saurolophus angustirostris Tarbosaurus bataar Therizinosaurus cheloniformis Isisaurus colberti Torosaurus latus Tyrannosaurus rex Deinocheirus mirificus Majungasaurus crenatissimus Puertasaurus reuili Minotaurasaurus ramachandrani Antarctosaurus wichmannianus Shantungosaurus giganteus Quetzalcoatlus northropi Triceratops horridus Ankylosaurus magniventris Pachyrhinosaurus lakustai Dinosaur extinction
