AUSTIN, Texas – New discoveries in the field of paleontology have shed light on the existence of ancient crocodile ancestors known as aetosaurs, offering a glimpse into a world that existed 215 million years ago.
A recent study conducted by researchers at the University of Texas at Austin revealed the identification of a new species of aetosaur, named Garzapelta muelleri. These aetosaurs, reminiscent of modern crocodiles, roamed the Earth during the Triassic Period between 229 million to 200 million years ago, predating the Jurassic Period.
Unlike their more commonly discussed dinosaur relatives, aetosaurs have been found on every continent except Antarctica and Australia. The fossils of Garzapelta muelleri, including a 70% complete dorsal carapace, provide valuable insights into the physical characteristics of these ancient creatures.
According to lead researcher William Reyes from the UT Jackson School of Geosciences, the discovery of a largely intact fossil like Garzapelta muelleri is remarkable due to the typically limited material found in such cases.
Describing the external skeleton of Garzapelta muelleri as an osteoderm made up of rock-hard plates and curved spikes, researchers noted that the species was omnivorous, in contrast to its carnivorous modern cousin, the crocodile.
The study also highlighted the naming process behind Garzapelta muelleri, with “Garzapelta” paying homage to Garza County in northwest Texas where the fossil was unearthed, and “muelleri” honoring the late paleontologist Bill Mueller, who initially found the fossil in 1989.
Researchers compared Garzapelta muelleri’s skeleton with other ancient aetosaurs to confirm its status as a new species. The uniqueness of Garzapelta muelleri’s skeletal features, such as the distinct markings on the bones and the formation of osteoderm plates, set it apart from its aetosaur relatives.
Overall, the study underscores the significance of these discoveries in understanding the diverse prehistoric world and introduces the public to the fascinating creatures that roamed the Earth millions of years before dinosaurs like ankylosaurs. With each new finding, researchers continue to enhance our knowledge of ancient species and the ecosystems they inhabited.