What creature do these feet most likely belong to?

Environmental Science
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Nov 12th, 2015

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Archaeornithipus is an ancient bird that had no hallux.

Archaeornithipus was a genus of large bird ichnogenus discovered in Spain. The tracks date back to the Berriasian, making them among the oldest bird trace

Althought the New World Vultures with their straight toes and short hallux cannot grip or carry anything and would be limited to pinning small animals down with their feet and dispatching them with their beak.

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Nov 12th, 2015

From the picture, I notice three long toes with sharp talons.  The hind toe called the "hallux" looks simply like a talon.  The only bird that seems to lack a hallux is the Archaeornithipus.  It lived during the upper Jurassic to lower cretaceous period.

Archaeornithipus footprints were long, slender, clawed digits. Digits are keel-shaped. Digit III is the longest. Hallux (digit I) is very conspicuous and forms a 120-180° angle with digit III. 

Nov 12th, 2015

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