The flourishing period of seed ferns is

(1) Jurassic

(2) Devonian

(3) Carboniferous

(4) Triassic

(1) Herbaceous lycopods

(2) Sphenopsids

(3) Ferns

(4) Conifers

(1) Psilophyton

(2) Rhynia type plants

(3) Tracheophyte ancestors

(4) Chlorophyte ancestors

(1) Therapsids

(2) Sauropsids

(3) Thecodonts

(4) Tuataras

(1) Pelycosaurs

(2) Therapsids

(3) Thecodont reptiles

(4) Sphenopsids

(1) Turtles

(2) Mammals

(3) Gnetales

(4) Ginkgo's

(1) Crocodiles

(2) Snakes

(3) Tuataras

(4) Turtles

(1) Around 250mya e.g. Ichthyosaurs

(2) Around 300mya e.g. Therapsids

(3) Around 200mya e.g. Ichthyosaurs

(4) Around 150mya e.g. Therapsids

(1) Small sized reptiles of dinosaurs of that era still exist today.

(2) Tyrannosaurs rex was about 20 feet in height and had hugesome dagger like teeth.

(3) Dinosaur extinct, a possible reason may be most of them has evolved into birds

(4) Giant ferns fell to form coal deposits very fast

(1) The first mammals were shrews

(2) The fauna of North America overrode the mammals of South America.

(3) Continental drift caused Australian mammals to survive because of lack of competition.

(4) The fossils of first mammals are small sized.