This is a close-up of an embryonic skeleton of the dinosaur Massospondylus from a clutch of eggs at the 190-million-year-old nesting site found in the Golden Gate Highlands National Park in South Africa. Artwork by

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A new crocodyliform found in the Morrsion Fm. of Wyoming represents the first occurrence of the atoposaurid Theriosuchus morrisonensis in North America. Published today in Geology of the Intermountain West https://t.co/F8R84nf6JY art by

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the cave hyaena (Crocuta crocuta spelaea) found all over Eurasia.
1. Cave hyaena skull from Wookey Hole, Devon
2. Spotted hyaena by Charles J Sharp (CC-BY-SA)
3. Cave hyaena jaw from Kirkdale cave, Yorkshire
4. Cave hyaena coprolites by Didier Discouens (CC-BY-SA)

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Mesozoic crocodile 🐊from Germany, Museum, Haarlem

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The genus name has been revived and is valid until someone proves otherwise! https://t.co/VAFV2M6ucd

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Beautifully-preserved woolly mammoth mandible and molars dug out of the brickearth of Bexley in the late nineteenth century

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7. People ask why the bones of are colored reddish brown. This is the result of iron and iron oxide entering the bones turning the skeleton into fossilized bone. This indicates that Sue’s corpse was near a body of water.

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For here's a sneak peek at the I'll be exhibiting at the free public evening event on Dec 18th. Register here if you want to turn up: https://t.co/dama3O0doV. Art shows juv Gastoris, juv Tyrannosaurus, a Miocene vulture, and Rebellatrix.

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A reconstruction of Pararhabdodon isonensis from Isona, Catalonia

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As expected I couldn’t stop thinking about the newly described GIANT dicynodont Lisowicia, and started sketching. I imagined a couple of them on an tranquil Triassic afternoon surrounded by coelophysioid dinosaurs and probably a large temnospondyl

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Darwin's friend Frederick William Hope told him 'from sending home the much desired bones of Megatherium your name is likely to be immortalised' find out more about this extinct giant ground sloth this https://t.co/Qz5eMx30Nb

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Some Tarbosaurus bataar skulls. Made these photos at PIN yesterday. More photos will be posted.

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From , nicknamed “Jurassic Mom,” an ichthyosaur (Stenopterygius) fossilized with 7 unborn offspring, found in Holzmaden— a not-so-uncommon occurrence in that region. This was, by far, my fave specimen at this awesome museum. Visit if you’re in Houston! 👍🏻

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For the slide that started our paper in Proc B! A jaw cross-section of a therapsid shows some teeth fused in place and others suspended in sockets. That's because they are two stages in the lifecycle of a typical tooth! Mammals keep teeth in the "earlier" stage.

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Highlights from the Brachiosaurus (Hunted), Lavocatisaurus, Deinonychus and Placerias.

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Happy Today's featured -supported research names not one, but two new iguanodonts from the Cedar Mountain Formation of Utah - Iguanacolossus and Hippodraco! Read all about it here: https://t.co/xP5wLWR2fr

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