tarsometatarsus bone (IMAGE) University of Texas at Austin Caption The tarsometatarsus, or ankle bone, of a thick-billed parrot. The bone was collected at an archeological dig in New Mexico during the 1950s. UT doctoral student John Moretti identified the bone as belonging to a parrot. Credit John Moretti/UT Jackson School of Geosciences. Usage Restrictions Include photo credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.