$Typhlops$ is a:

To which of the following categories do dinosaurs belong?

Statement $A$: The name 'Reptilia' is derived from the Latin word 'repere' or 'reptum',which means 'to creep' or 'to crawl'.
Statement $B$: Since they creep or crawl,it is not necessary that all animals of the class Reptilia are limbless.

Which among the following is an exception to possessing a three-chambered heart?

Which of the following lacks a tympanum?

Gavial or gharial is found in