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Palaeolyngbya barghoorniana
Palaeolyngbya barghoorniana Schopf, 1868BacteriaEubacteriaCyanobacteriaNostocalesOscillatoriaceae Late PrecambrianBitter Springs Chert (Neoproterozoic)Central AustraliaLength: each cell about 10 micron...
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Ischigualastia jenseni
Ischigualastia jenseni Cox, 1962SynapsidaTherapsidaAnomodontiaDicynodontiaKannemeyeriidae Late TriassicIschigualasto Fm (Carnian)San Juan province, ArgentinaLength: 3.5 mA large herbivorous dicynodont...
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Chiniquodon theotonicus
Chiniquodon theotonicus von Huene, 1936SynapsidaTherapsidaCynodontiaChiniquodontidae Late TriassicSanta Maria Fm (Carnian)Rio Grande do Sul, BrazilLength: 50 cmThis dog size agile carnivore was quite...
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Hyperodapedon sanjuanensis
Hyperodapedon sanjuanensis Sill, 1970RhynchosauriaHyperodapedontidaeLate Triassic Ischigualasto Fm (Carnian)San Juan Prov., ArgentinaLength: 1.5 mSpecies of this genus of rhynchosaur have been found in...
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Zby atlanticus
Zby atlanticus Mateus, Mannion & Upchurch, 2014DinosauriaSaurischiaSauropodomorphaSauropodaTuriasauriaLate JurassicLourinha Fm (Late Kimmeridgian)PortugalLength: ? 20 mThis sauropod with a very...
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Cooksonia pertoni
Cooksonia pertoni Lang, 1937PlantaeEmbryophytaPolysporangiophytaTracheophyta Upper SilurianEnglandSize: ~5 cm tallCooksonia is the oldest known vascular plant. It is believed to be intermediate between...
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Chroniosaurus dongusensis
Chroniosaurus dongusensis Tverdochlebova, 1972Tetrapoda? ReptiliomorphaChroniosuchiaChroniosuchidae Late PermianSeverodvinian horizon (Late Tatarian)Orenburg Province, RussiaLength: 30 cmThis is...
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Madygenerpeton pustulatus
Madygenerpeton pustulatus Schoch et al., 2010Tetrapoda? ReptiliomorphaChroniosuchiaChroniosuchidae Middle or Late TriassicMadygen Fm (Ladinian or Carnian)KyrgyzstanLength: 70 cmIt is the most primitive...
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Diplocaulus magnicornis
Diplocaulus magnicornis Cope, 1882AmphibiaLepospondyli NectrideaDiplocaulidaeLate PermianArroyo Formation (Kungurian)Texas, USLength: 1 mDiplocaulus was an aquatic lepospondyl amphibian with an unique...
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Seymouria baylorensis
Seymouria baylorensis Broili, 1904ReptiliomorphaSeymouriamorphaSeymouriidaeEarly PermianArroyo Fm (Kungurian)Texas, US Length: 70 cmSeymouria was often described as the "first reptile". However, in...
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Pezosiren portelli
Pezosiren portelli Domning, 2001MammaliaSireniaProrastomidae EoceneSeven Rivers SiteJamaicaLength: 2.5 mThis is the earliest known fully quadrupedal sirenian, the group of mammals to which manatees and...
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Sinosaurosphargis yunguiensis
Sinosaurosphargis yunguiensis Li et al., 2011ReptiliaDiapsidaSaurosphargidae Middle TriassicGuanling Fm (Anisian)Yunnan, ChinaLength: 70 cmKnown from a single almost complete skeleton,...
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Aristonectes quiriquinensis
Aristonectes quiriquinensis Otero et al., 2014ReptiliaSauropterygiaPlesiosauriaPlesiosauroideaElasmosauridaeAristonectinae Late CretaceousQuiriquina Fm (Maastrichtian)ChileLength: 8.5 mThe affinities...
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Hexanchus
Hexanchus sp. Rafinesque, 1810ChondrichthyesElasmobranchiiSelachimorphaHexanchiformesHexanchidae Eocene-RecentLength: 5 mThe sixgill shark survived today only as a deep water scavenger but it was more...
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Weltonia ancistrodon
Weltonia ancistrodon Arambourg, 1952ChondrichthyesElasmobranchiiSelachimorphaHexanchiformesHexanchidae Paleocene- EoceneMoroccoLength: ?Like many fossil cartilaginous fish, Weltonia is only known by...
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Kaiwhekea katiki
Kaiwhekea katiki Cruikshank & Fordyce, 2002ReptiliaSauropterygiaPlesiosauriaPlesiosauroideaElasmosauridaeAristonectinae Late CretaceousKatiki Fm (Maastrichtian)New ZealandLength: 6.5 mThis...
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Gephyrosaurus bridensis
Gephyrosaurus bridensis Evans, 1980ReptiliaLepidosauromorphaRhynchocephaliaGephyrosauridae Early JurassicFissure infills (Hettangian or Sinemurian)Wales, UKLength: 25 cmThe "Bridge Lizard" is the most...
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Rhombodus binkhorsti
RhombodusĀ binkhorsti Dames, 1881ChondrichthyesElasmobranchiiBatoidea MyliobatiformesRhombodontidaeLate CretaceousMaastrichtianNorth America, Europe, North AfricaLength: ?This fossil ray is only known...
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Priosphenodon avelasi
Priosphenodon avelasi Apesteguia & Novas, 2003ReptiliaLepidosauromorphaRhynchocephaliaSphenodontidaeOpisthodontia Eilenodontinae Late CretaceousCandeleros Fm (Cenomanian-Turonian)Rio Negro,...
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Spinosaurus aegyptiacus
Spinosaurus aegyptiacus Stromer, 1915DinosauriaTheropodaSpinosauridaeSpinosaurinaeLate CretaceousBahariya Fm (Cenomanian)Egypt A highly publicized 2014 study by Ibrahim and co-workers drastically...
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