https://ntamura.deviantart.com/art/Dinosaur-phylogeny-339509599 https://en.wikipedia.org/wiki/Dinosaur#Taxonomy
http://s493.photobucket.com/user/denysmva/library/Denys%20Villalobos%20Alfaro/Parque%20Megafauna%20Monteverde%20%20Puntarenas%20Costa%20Rica?sort=3&page=1
https://www.facebook.com/megafauna.monteverde/photos?lst=762855416%3A100001294717884%3A1522696682&source_ref=pb_friends_tl
http://www.museolasalle.ed.cr/secciones/paleontologia/
https://paleobiodb.org/navigator/
http://www.dinodatabase.com/dinorcds.asp