Final answer:
The statement likely refers to the Hadrosaurid dinosaurs, which were indeed found across what is now North America, from Alaska to Mexico. Fossil evidence confirms their wide distribution during the Late Cretaceous period.
Step-by-step explanation:
The statement 'Hardosaurid distribution in the New World extended from Alaska to Mexico' is likely a misstatement concerning the distribution of Hadrosaurid dinosaurs, which were indeed found from Alaska to Mexico. Hadrosaurids were a group of ornithischian dinosaurs known for their duck-billed appearance. The fossils of these creatures indicate that they were widespread in what is now the North American continent during the Late Cretaceous period.
The fossil record provides essential insights into the biogeography of ancient species, including the Hadrosaurids. Biogeography is the study of how living and extinct organisms are distributed across the globe in relation to geographic and geological features. Understanding the fossil distribution of dinosaurs can provide a wealth of information about their ecology and evolution.