The histology and growth rate of Nile crocodile (<i>Crocodylus niloticus</i>) claws

Abstract The histology and growth of reptilian crocodilian claws (ungues) have been extensively studied; however, Nile crocodile ( Crocodylus niloticus ) not received adequate attention. Furthermore, age estimations for remain unexplored, despite being used in long‐term dietary reconstruction studies, assuming certain age‐related patterns. In this study, we investigate the patterns claws, aiming to infer axes sampling cornified material radiocarbon dating establish claws. Our findings reveal that exhibit similar other reptilians, presenting as modified scutes/scales with an profile along sagittal plane. This starts at basal germ matrix progressively expands thickness dorsoventrally towards apex or “tip.” Consequently, oldest corneous is concentrated most dorsal point claw's apex. To validate previous assumptions, conducted on region claw, which supported idea retained typically relatively young (5–10 years old) due abrasion. study contributes insights into dynamics shedding light their use studies emphasizing significance considering assumptions such investigations.