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Barylambda faberi
Barylambda faberi (Patterson, 1933)MammaliaCimolestaPantodontaBarylambdidaePaleoceneDeBeque Fm (Clarkfordian)Colorado, USLength: 2.5 mThe North American Barylambda was a heavyweight among the...
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Seismosaurus halli
Diplodocus hallorum (Gillette, 1991)DinosauriaSaurischiaSauropodomorphaSauropodaDiplodocoideaDiplodocidaeLate JurassicMorrison Fm (Kimmeridgian)New Mexico, USLength: 32 mOne of the longest dinosaurs,...
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Deinogalerix koenigswaldi
Deinogalerix koenigswaldi Freudenthal, 1972MammaliaBoreoeutheriaLaurasiatheriaEulipotyphiaErinaceidaeGalericinaeLate Miocene,San Giovannino fissure fills, Gargano [Upper Vallesian-Turolian]ItalyLength:...
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Eomanis waldi
Eomanis waldi Torch, 1978MammaliaBoreoeutheriaLaurasiatheriaScrotiferaFereuungulataFeraePholidotaMiddle EoceneMessel pit [Lutetian]GermanyLength: 50 cm This ancestral pangolin was very much similar to...
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Platybelodon grangeri
Platybelodon grangeri Osborn, 1929MammaliaEutheriaAfrotheriaProboscideaGomphotheriidaeLate MioceneMongolia.Length: 3.5 mWear patterns of the teeth suggest that this shovel-tusked elephant used its...
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Onychonycteris finneyi
Onychonycteris finneyi Simmons et al., 2008MammaliaEutheriaLaurasitheriaScrotiferaChiropteraOnychonycteridae Early EoceneGreen River FmWyoming, USWingspan: 40 cmKnown from an almost complete skeleton,...
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Notocolossus gonzalezparejasi
Notocolossus gonzalezparejasi González Riga et al., 2016DinosauriaSaurischiaSauropodomorphaSauropodaMacronariaTitanosauriformes TitanosauriaLithostrotia Late CretaceousPlottier Fm, Neuquén Gr (Upper...
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Argentavis magnificens
Argentavis magnificens Campbell & Tonni, 1980AvesNeornithes CathartiformesTeratornithidaeLate MioceneEpecuén Fm [Huayquerian]La Pampa, ArgentinaWingspan: 7 mWith a wingspan estimated at 7 meters,...
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Dracoraptor hanigani
Dracoraptor hanigani Martill et al., 2016DinosauriaSaurischiaTheropodaNeotheropoda Early JurassicBlue Lias Fm (Hettangian)Wales, UKLength: 2 mKnown from about 40 % of the skeleton, this small dinosaur...
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Mycterosaurus longiceps
Mycterosaurus longiceps Williston, 1915SynapsidaVaranopidaeMycterosaurinae Early PermianWaggoner Ranch Fm, Wichita Gr (Artinskian)Texas, USLength: 60 cmKnown from a fragmentary skeleton from the Early...
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Varanops brevirostris
Varanops brevirostris (Williston, 1911)SynapsidaVaranopidaeVaranodontinaeEarly PermianArroyo Fm, Clear Fork Gr (Kungurian)Texas, USLength: 1.3 mThis agile predator was among the largest one in the...
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Eothyris parkeri
Eothyris parkeri Romer, 1937SynapsidaCaseasauriaEithyrididae Early PermianPetrolia Fm (originally Belle Plains Fm), Wichita Gr [Artinskian]Texas, USLength: 30 cmEothyris is only known from a single...
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Cotylorhynchus romeri
Cotylorhynchus romeri Stovall, 1937SynapsidaCaseasauriaCaseidaeEarly PermianHennessey Fm, Clear Fork Gr [Kungurian]Oklahoma, USLength: 3 mCotylorhynchus was a bizarre vegetarian with a tiny head, large...
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Keichousaurus hui
Keichousaurus hui Young, 1958SauropterygiaNothosauroideaPachypleurosauriaKeichousauridae Late TriassicZhuganpo Fm (Carnian)Ghizou, ChinaLength: 40 cmThis small pachypleurosaur is one of the most common...
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Wumengosaurus delicatomandibularis
Wumengosaurus delicatomandibularis Jiang et al., 2008SauropterygiaNothosauroideaPachypleurosauriaMiddle TriassicGuanling Fm (Anisian)Ghizou, ChinaLength: 1 mThis unusual Sauropterygian from the Middle...
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Yamatocetus canaliculatus
Yamatocetus canaliculatus Okazaki, 2012MammaliaPlacentaliaCetartiodactylaCetaceaChaeomysticeti MysticetiEomysticetidae Late OligoceneJinnobaru Fm, Ashiya Gr.Kyushu, ChinaLength: 5 mThis archaic baleen...
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Mirocetus riabinini
Mirocetus riabinini Mchedlidze, 1970MammaliaPlacentaliaCetartiodactylaCetaceaOdontocetiMirocetidae Early OligoceneLower Maiko beds, Maiko Gr (uppermost Rupelian or lowermost Chattian)AzerbaijanLength:...
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Janjucetus hunderi
Janjucetus hunderi Fitzerald, 2006MammaliaPlacentaliaCetartiodactylaCetaceaMysticetiMammalodontidaeLate OligoceneJan Juc Fm [Chattian]Victoria, AustraliaLength: 3.5 mThe first baleen whales had teeth...
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Tullimonstrum gregarium
Tullimonstrum gregarium Richardson, 1966ChordataCraniataHyperorartiaPetromyzontiformes Middle PennsylvanianMazon Creek, Carbondale Fm [Westphalian D]Illinois, USLength: 30 cmThe state fossil of...
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Horopeta umarere
Horopeta umarere Tsai & Fordyce, 2015MammaliaPlacentaliaCetartiodactylaCetaceaMysticetiLate OligoceneMiddle Kokoamu Greensand [Chattian]South Island, New ZealandLength: 7 mHoropeta is the earliest...
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