From new insights into how we classify dinosaurs, to the structure of their feathers, to the timeline of their embryonic development, paleontologists are still making cool discoveries all the time!

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Sources:
Hips:
http://rstb.royalsocietypublishing.org/content/371/1691/20150219
https://blogs.scientificamerican.com/laelaps/most-dinosaur-species-are-still-undiscovered/
https://www.theatlantic.com/science/archive/2017/03/dinosaur-family-tree-saurischia-ornithischia-childhood-shattered-what-is-real-anymore/520338/
http://www.nature.com/nature/journal/v543/n7646/full/nature21700.html

Tail in amber:
http://www.sciencemag.org/news/2016/12/dinosaur-tail-trapped-amber-sheds-light-evolution-feathers
http://www.sciencedirect.com/science/article/pii/S0960982216311939

Eggs:
https://www.eurekalert.org/pub_releases/2017-01/amon-rod122816.php
https://phys.org/news/2017-01-hatch-dinosaur-egg-months.html
http://www.pnas.org/content/114/3/540.full
https://www.psi.edu/epo/ktimpact/ktimpact.html

Images:
https://commons.wikimedia.org/wiki/File:Ornithischia_pelvis.png
https://commons.wikimedia.org/wiki/File:Saurischia_pelvis.png
https://commons.wikimedia.org/wiki/File:Diplodocus_size_comparison.png
https://commons.wikimedia.org/wiki/File:Anchiornis_feathers.jpg
https://commons.wikimedia.org/wiki/File:Archaeopteryx-modern_bird_tails.png
https://commons.wikimedia.org/wiki/File:Parrot-feather.jpg
https://en.wikipedia.org/wiki/File:FeatherMagnified.JPG
https://commons.wikimedia.org/wiki/File:Hatchling_birds_in_nest_with_eggs.jpg
https://commons.wikimedia.org/wiki/File:Glaucus_gull_(Larus_hyperboreus)_with_its_hatchling,_Svalbard.jpg
https://www.eurekalert.org/multimedia/pub/130003.php?from=346553
https://www.eurekalert.org/multimedia/pub/130002.php?from=346553