The track sizes and shapes from the Poland site indicate flat-bodied, lizard-like creatures up to 8.2 feet (2.5 meters) long with stout legs.
Notes on verification
Confirmed by peer-reviewed Nature publication and multiple independent corroborating sources including Wikipedia and geoheritage documentation. [cascade flags: wikipedia_dropped_other_sources_exist | tier=silver indep_score=0.9 clusters=4 claim_tier=notable]
Sources
- Oldest Land-Walker Tracks Found--Pushes Back Evolution (seed:science_and_space)
- https://www.cnn.com/2010/WORLD/europe/01/07/tetrapods.poland.evolution.discovery/index.html (corroboration)
- https://www.nature.com/articles/nature08623 (corroboration)
- https://iugs-geoheritage.org/geoheritage_sites/devonian-tetrapod-trackways-holy-cross-mountains/ (corroboration)
- https://www.flinderspalaeosoc.org/post/on-the-hunt-for-tetrapod-footprints (corroboration)