22-12-2025, 07:44 PM
Quote:[color=oklch(0.373 0.034 259.733)][font=Inter, 'Inter Fallback: Arial', 'Inter fallback', ui-sans-serif, system-ui, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji']Trackways preserved in stone in South Africa look very much like those from modern birds. However, deep time ‘dating’ puts them at 215 million years ago, over 60 million years older than the oldest bird fossil (Archaeopteryx, 150 Ma).[color=oklch(0.21 0.034 264.665)]1[/color][/font][/color]
[color=oklch(0.373 0.034 259.733)][font=Inter, 'Inter Fallback: Arial', 'Inter fallback', ui-sans-serif, system-ui, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji']The evolutionary story that birds evolved from dinosaurs already had problems—for example, Archaeopteryx, a clearly flying bird, predates any of its supposed ancestors. How could a grandson be older than his grandfather?[/font][/color]
[color=oklch(0.373 0.034 259.733)][font=Inter, 'Inter Fallback: Arial', 'Inter fallback', ui-sans-serif, system-ui, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji']The researchers identified six characteristics of the prints that were consistent with birds making them. However, bird tracks that put birds back another 65 million years would compound the problem for the evolutionary story.[/font][/color]
[font=Inter, 'Inter Fallback: Arial', 'Inter fallback', ui-sans-serif, system-ui, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji']Deep time ‘dating’ puts them [the footprints] at 215 million years ago, over 60 million years older than the oldest bird fossil[/font]
[color=oklch(0.373 0.034 259.733)][font=Inter, 'Inter Fallback: Arial', 'Inter fallback', ui-sans-serif, system-ui, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji']Thus, the authors try to downplay the similarity to modern birds: “[the foot type] is not distinctly avian, as it lacks a well-developed digit III metatarsophalangeal pad and preserves no direct evidence of associated hallux [hind toe] impressions.”[/font][/color]
[color=oklch(0.373 0.034 259.733)][font=Inter, 'Inter Fallback: Arial', 'Inter fallback', ui-sans-serif, system-ui, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji']However, there are modern birds with a three-toe foot design (i.e. no hallux), such as cassowaries, emus, rheas, and bustards.[/font][/color]

![[Image: DSC05383-Editb742b4b47b71f691.jpg]](https://i.postimg.cc/cHBqm1zw/DSC05383-Editb742b4b47b71f691.jpg)