Sharks of the Cenozoic were largely filter feeders, despite their intimidating teeth! Platybeldon had very large narrow lower tusks that were used for fighting sharks. Megaldon sharks could technically eat mastodons. Shark jaws were huge, disproprotionately so, compared to their bodies.

not too sure but maybe in the hot springs.

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.