Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Asif ali
B) P-T boundary I think the name should be Productus not Products . Productus mainly belonging to age of Carboniferous to Permian and Claria is a lamillibranchia which mainly of Triassic age