Final answer:
The statement suggesting that no dinosaurs were aquatic is false; certain reptiles like Mesosaurs were adapted to aquatic habitats. Fossil evidence supports their ability to live in water environments such as lakes and estuaries during the Mesozoic Era.
Step-by-step explanation:
The statement Few, if any, dinosaurs were actually aquatic and lived in lakes is False. Although the majority of dinosaurs were terrestrial, there were reptiles that showed extraordinary diversification and became adapted to aquatic environments. For instance, the Mesosaurs were reptiles that flourished in the early Mesozoic Era, about 240 million years ago, and adapted to life in water. They had limbs for swimming and could also walk on land, living in lakes, coastal bays, and estuaries. Fossil evidence indicates that these Mesosaurs had characteristics compatible with life in aquatic habitats, distinguishing them from land-dwelling reptiles like Lystrosaurus, which were poor swimmers and laid their eggs on land. Additionally, it's important to recognize other marine reptiles existed during the Mesozoic Era, many of which are sometimes confused with dinosaurs. However, the pterosaurs and marine reptiles such as the ichthyosaurs and plesiosaurs were not dinosaurs, though they lived during the same periods.