In this recorded lesson, the instructor discusses dinosaur eggs and how all dinosaurs are believed to have laid eggs, similar to modern reptiles. The lesson includes counting the number of eggs typically laid, which ranges between 15 to 20 per sitting, and explains that these large numbers were likely due to the threat of other animals eating the eggs. The instructor also shows fossilized dinosaur eggs and a video of a baby titanosaur hatching, illustrating the process with details such as the egg tooth used to crack the shell.