AI Uncovers Dinosaur Footprint Secrets, Suggesting Deeper Avian Roots

An innovative artificial intelligence application has been developed to identify dinosaurs from their fossilized footprints. This significant research was co-authored by Professor Steve Brusatte of the University of Edinburgh and Dr. Gregor Hartmann from Helmholtz-Zentrum in Germany.

New AI System Revolutionizes Footprint Analysis

Previous AI systems for footprint identification often faced limitations due to potential inaccuracies within existing labeled data. The new system tackles this challenge with a distinct approach, analyzing 2,000 unlabelled footprint silhouettes.

The AI subsequently identified eight distinct features that reflect variations in footprint shapes, including toe spread, ground contact, and heel position.

Methodology and Development

Instead of relying on potentially flawed pre-labeled data, the AI learned directly from raw, unclassified shapes. This process allowed the system to independently discern critical morphological characteristics, such as toe spread, ground contact, and heel position.

Introducing DinoTracker

The newly developed system has been released as a free application named DinoTracker. This app empowers users to upload their own footprint silhouettes, view the seven most similar prints identified by the AI, and even adjust the system's identified features to understand their influence on similarity comparisons. Initial evaluations of DinoTracker suggest that the system's clustering of prints aligns with human expert classifications approximately 90% of the time.

Evolutionary Implications and Early Birds

Findings from the AI system corroborate prior paleontological observations regarding a collection of birdlike footprints discovered from the Triassic and early Jurassic periods. These intriguing footprints precede the oldest known bird skeletons, such as Archaeopteryx, by approximately 60 million years.

Professor Brusatte indicated that this discovery could suggest a considerably older and more profound evolutionary lineage for birds than previously recognized. However, he also proposed that these tracks might have been made by meat-eating dinosaurs possessing birdlike feet, possibly ancestors of birds, but not necessarily true birds.

Expert Perspectives and Caveats

Dr. Jens Lallensack of Humboldt University of Berlin, who was not involved in this particular study, offered a crucial perspective on the findings. He pointed out a limitation, noting that the identified features may not directly correspond to the actual foot shape of the animal.

Dr. Lallensack also hypothesized that the birdlike appearance of some of these tracks might result from a theropod foot sinking into soft ground, rather than providing direct evidence for an early emergence of true birds.