Trilobites were evolved during which of the following periods?

Dinosaurs were abundant during

Which of the following dominated in the Palaeozoic era?

The book "Descent of Man" and "Selection in Relation to Sex" was written by:

As the horse evolved,there was a progressive reduction in the number of toes. Which of the following is the correct sequence in the evolution of the horse?

Match List $I$ with List $II$:

List $I$	List $II$
$A$. Mesozoic Era	$I$. Lower invertebrates
$B$. Proterozoic Era	$II$. Fish and Amphibia
$C$. Cenozoic Era	$III$. Birds and Reptiles
$D$. Paleozoic Era	$IV$. Mammals

Choose the correct answer from the options given below: