Subclass Diapsida is a classification of reptiles that includes two groups: the lepidosaurs and the archosaurs. Lepidosaurs are characterized by their scaly skin and include lizards, snakes, and tuataras. Archosaurs are known for their diapsid skulls and include crocodiles, alligators, dinosaurs, and birds. While Subclass Diapsida is a specific term used in taxonomy, there are other words that can be used in place of it to describe this group of reptiles. Some synonyms for Subclass Diapsida include reptilia, diapsid, and reptile subclass. Understanding synonyms for scientific terms can help make conversations and research more accessible to a wider audience.