Arthrodira
Videos
Arthrodira is an order of extinct armored, jawed fishes of the class Placodermi that flourished in the Devonian period before their sudden extinction, surviving for about 50 million years and penetrat
Dunkleosteus terrelli 2024 reconstruction
The pelagic selenosteid Amazichthys trinajsticae
Lower jaw plate of Eastmanosteus pustulosus from the Middle Devonian of Wisconsin
Heterosteus ingens from the Middle Devonian of Estonia
Brachythoraci
Videos
Brachythoraci is an extinct suborder of arthrodire placoderms, armored fish most diverse during the Devonian.
Arthrodira
…bony fish, and all tetrapods. Arthrodira was traditionally divided into the paraphyletic Actinolepida, the Phlyctaenii (now also paraphyletic), and the Brachythoraci. Phylogenetic studies have since found two of those groups as paraphyletic, as shown in the cladogram below, from Dupret et al. (2009). Order Arthrodira…
Dunkleosteos and Titanicthys at Wyoming Dinosaur Center