I am ecstatic to share the first dinosaur species I describe so far: Hesperonyx martinhotomasorum (reconstruction by Victor Carvalho ).
This guy is a new small sized iguanodontian from the Upper Jurassic of Portugal.
Here's the link: https://t.co/nsvy3ySzeu
This work resulted from the Erasmus+ and Master Thesis project of @errequad , carried out between Bologna University and University of Tübingen.
It has been a pleasure to see this taking shape as a co-advisor :) Enjoy!
New paper out! 🦴We studied an exceptionally preserved juvenile of Dysalotosaurus lettowvorbecki from the Tendaguru Formation using micro-CT scans, reconstructing ~40 bones hidden inside a rock block. @ThePalAss
https://t.co/RrOShy1aiL
#Paleontology#Jurassic#Evolution
The surprise? Neck vertebrae were fusing earlier than those further back in the spine — challenging the traditional “tail-to-head” model of vertebral fusion in dinosaurs.
@Paleojim@ASWolniewicz@AAlechiarenza@PaleoSoc@Fossilcrates Hi Jim, when I saw collections in Yale and AMNH I also felt that Tenontosaurs look more 'derived' than expected. At this stage I did not tackle so much that part of the tree. I do agree with you that Aptian and possibly J/K extinctions has huge impacts on their evolution.
🦖 Plot twist: iguanodonts didn’t start in the Cretaceous. Our study pushes their origin back to the Early–Middle Jurassic (~180 Ma) — revealing a long hidden history. 🔥 Plus: a new clade, Ouranosauria (incl. Ouranosaurus-like forms)🌍 Global by the Late Jurassic.@AAlechiarenza
New paper out today in @ThePalAss : https://t.co/02jNBYRW2H
Co-led with @PalaeoFil (coauthors Federico Fanti & Miguel Moreno-Azanza).
Using the largest data matrix yet, we name a new sail-backed clade (Ouranosauria) & reassess Iguanodon taxonomy. 🎨 Artwork by Davide Bonadonna