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Smithsonian
Looks like a geode, but this crystal-filled specimen is a fossilized crocodile egg! s.si.edu/17U89yx #FossiLab pic.twitter.com/TbUIcg9Ihz
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The crystals that fill this lovely specimen, USNM 12597, makes it appear geode-like, but microscopic analysis of the outer layer reveals structures typical of crocodilian eggshells! The egg was laid during the Eocene, about 45 million years ago, and is one of several collected in present day Wyomin
Overheard in Museums Day: "Do the Ruby Slippers still work?" to take you to Kansas? bit.ly/kidQs #OHMuseums pic.twitter.com/3jgumxTlIH
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1885: Mark Twain publishes "Adventures of Huckleberry Finn." Miss River. chart book from 1972: ow.ly/ISV6Z pic.twitter.com/ulr2FpGS8K
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Bored on your #snowday? We'd love some help transcribing historic documents transcription.si.edu @TranscribeSI pic.twitter.com/FvyxDPKl5F
Update: our @NationalZoo will OPEN at noon today. Cue Bao Bao's snow frolicking backflips pic.twitter.com/kC51IYgfBA
Happy #ValentinesDay! Sharing love-struck items, like this love letter from Frida Khalo bit.ly/175ePcf pic.twitter.com/AlfODnVxhu
"Pour the wine, light the fire / Girl your wish is my command" - Boyz II Men ♥ ow.ly/J1da1 pic.twitter.com/tZycCZMB0o
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"If you're lost you can look, and you will find me / Time after time" - Cyndi Lauper ♥ ow.ly/J1d2l pic.twitter.com/VT0R8aHEQT
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I think a lot about: My pollinator, the male Purple Throated Carib hummingbird s.si.edu/1B6SXdz #NMNHcupid pic.twitter.com/JtUCx8FTFx
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#Snapshot Matthew Henson: Maryland sharecropper, world traveler and arctic explorer. bit.ly/171P7Fm pic.twitter.com/L8EenxV0Cs
We love you, tweeps, and we wanted to sing you a Valentine song. But we couldn't decide which: bit.ly/NMAHlove pic.twitter.com/4lu0YIIDvC
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Celebrate #Lincoln's birthday by taking an interactive 3D tour of his life mask bit.ly/1KNr102 @3D_Digi_SI pic.twitter.com/N7KIXvg56z
#Lincoln & #Darwin were both born today in 1809. How they shaped the modern world: bit.ly/1KNlgzz pic.twitter.com/RfsxMk8rx1
We have one bird collected by Charles Darwin in the collection, a Hudsonian godwit. s.si.edu/1EeYVGW #DarwinDay pic.twitter.com/5DYKymYoTJ
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