Bone histology of crown-group birds is a research topic of great interest. permitting insight into the evolution of remarkably high growth rates in this clade and variation across the altricial-precocial spectrum. In this study. we describe microanatomical characteristics of the humerus and femur in partial growth series from 14 crown group birds representing ten major clades (Struthi... https://mabelandfoxs.shop/product-category/ride-on-toy/