Congratulations to our #2021aaa winner, Albertosaurus!

Thank you for partaking in our second annual Archosaur april absurdity! We look forward to seeing you next year for #2022AAA

Missing March Madness? All through April, we’ll be holding a series of match-ups between different prehistoric creatures! Our competitive bracket will be archosaurs, a group of upright, active reptiles that includes crocodiles, birds, non-avian dinosaurs, and a variety of other extinct families. Throughout the month there will be different face-offs between divisions of animals as shown in the bracket.


If you want to play along, choose which animal you think would be the winner in each match-up. Just like in basketball, contestants are seeded. Animals with the smallest numbers beside their names are the highest-seeded, and stand a better chance of winning. We will be posting a play-by-play of each match written by museum staff and palaeontologists from other museums. Follow along with April Archosaur Absurdity and see how well your favourite fossil creatures do!



Matches will be posted on the following days starting at 2pm MST:

  • MARCH 29 – Bracket Released
  • APR. 1 – #AAA2021 begins

NA Divison: 

  • APR. 3 – Match #1, Eotriceratops (1) vs. Hesperornis(8)
  • APR. 4 – Match #2, Corythosaurus (4) vs. Utahraptor (5) 
  • APR. 14  – Match #9, Hesperosaurus (3) vs. Stegoceras (6)
  • APR. 15 – Match #10, Albertosaurus (2) vs. Chirostenotes (7)

EA Divison:

  • APR. 5 – Match #3, Tarbosaurus (1) vs. Confucisornis (8)
  • APR. 7 – Match #4, Prenocephale (4) vs. Citipati (5) 
  • APR. 17 – Match #11, Olorotitan(3) vs. Liaoningosaurus (6)
  • APR. 18 – Match #12, Therizinosaurus (2) vs. Psittacosaurus (7)

SA Divison:

  • APR. 8 – Match #5, Patagotitan (1) vs. Pisanosaurus(8)
  • APR. 10 – Match #6, Amargasaurus (4) vs. Irritator (5)
  • APR. 19 – Match #13, Carnotaurus (3) vs. Lessemsaurus (6)
  • APR. 21 – Match #14, Mapusaurus (2) vs. Austroraptor (7)

AF Divison:

  • APR. 11 – Match #7, Giraffatitan (1) vs. Heterodontosaurus (8)
  • APR. 12 – Match #8, Majungasaurus (4) vs. Kentrosaurus (5) 
  • APR. 22 – Match #15, Suchomimus (3) vs. Ouranosaurus (6)
  • APR. 24 – Match #16, Carcharodontosaurus (2) vs. Elaphrosaurus (7)

NA Divison: 

  • APR. 25 – Match #17, 
  • APR. 26 – Match #18, 

EA Divison:

  • APR. 28 – Match #19, 
  • APR. 29 – Match #20, 


SA Divison:

  • MAY 1 – Match #21, 
  • MAY 2 – Match #22, 


AF Divison:

  • MAY 3 – Match #23, 
  • MAY 5 – Match #24,

NA Divison: 

  • MAY 6 – Match #25, Eotriceratops vs Albertosaurus

EA Divison:

  • MAY 8 – Match #26, Citipati vs. Therizinosaurus

SA Divison:

  • MAY 9 – Match #27, Carnotaurus vs Patagotitan

AF Divison:

  • MAY 10 – Match #28, Kentrosaurus vs Carcharodontosaurus
  • MAY 12 – Match #29, 
  • MAY 13 – Match #30,

MAY 15 – Match #31,

  • Download and print out the #2021 AAA Bracket  above for you and your friends.

  • Share your bracket selections amongst your friends and on social media using the hashtag #2021AAA

  • A summary sheet of the creatures can be found here! If you are looking to incorporate Archosaur April Absurdity into your virtual or at-home classroom, a lesson plan is available here!

  • Make your selections for the winner in head-to-head competition for each pair of animals each round, all the way to selecting your champion. Be sure you have your selections locked in by the time the match winners start being announced on Apr. 3. Matches will not always be characterized as a “fight;” some matches may be decided by threatening displays, running away, or hiding from sight. These animals will behave in ways that are “realistic” if these encounters actually happened, using scientific research to inform our descriptions where possible.

  • The play-by-play of each match and the winner will be posted on our website. Click “Watch The Fights” to view them! Tune into Twitter and Instagram for match sneak-peeks. Summaries will be posted on Facebook.

  • Score points for each match winner that you correctly guess, 1 point for round one, 2 points for round two, 3 points for round three, 5 points for round four, 8 points for round five, and 13 points for correctly guessing the champion. Keep track of your score, and find out who is the best at predicting the bracket!

  • The environment and time period in which the matches take place will be determined in Rounds 1 and 2 by the home environment and time of the higher ranked animal. Rounds 3, 4, and 5 will be set in a neutral location, including: the Western Interior Seaway of the Cretaceous Niobrara Formation in Kansas, the forested river-lands of Alberta’s own late Cretaceous Wapiti Formation, the arid Wessex Formation of the British Isles, the tropical Portezuelo Formation of Argentina, the temperate coastal forests of Antarctica’s Hanson Formation, the sand dunes and oases of Mongolia’s late Cretaceous Barun Goyot Formation, and the warm swamps of Montana’s Hell Creek Formation at the end of the Age of Dinosaurs.


This online event was inspired by Mammal March Madness, created by Dr. Katie Hinde. We thank Dr. Hinde for her assistance in bringing this event to you. For more information on Mammal March Madness, please see here.

This event has been made possible by the generous donation of time by experts Robin Sissons and Dr. Corwin Sullivan, in cooperation with the staff of the Philip J. Currie Dinosaur Museum.

Additional Resources:

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