Brachiopods,Bivalves,Echinoderms,Bryozoans,and some corals went extinct and yes these are real words.
The Silurian went from 443.4 ± 1.5mya to 419.2 ± 3.2mya. It spanned from the conclusion of the Ordovician period to the beginning of the Devonian period. However the exact time frame of the Silurian period is unknown and could be off by millions of years because of the fact that that period was set during a significant extinction event. Therefore, the Silurian period lasted about 42 million years, give or take.
The animals went in 2 by 2.hurrah hurrah x2 the animals went in 2 by 2. the elephant and the kangaroo and they all went into the ark all to get out of the rain the animals went in 3 by 3.hurrah hurrah x2 the animals went in 3 by 3. the wasp, the ant and the bumble bee and they all went into the ark all to get out of the rain the animals went in 4 by 4.hurrah hurrah x2 the animalls went in 4 by 4. the big hippopotamus stuck in the door and they all went into the ark all to get out of the rain the animals went in 5 by 5.hurrah hurrah x2 the animals went in 5 by 5.by hugging each other they kept alive and they all went into the ark all to get out of the rain the animals went in 6 by 6.hurrah hurrah x2 the animals went in 6 by 6.they laughed at the monkey because of his tricks and they all went into the ark all to get out of the rain the animals went in 7 by 7.hurrah hurrah x2 the animals went in 7 by 7.the little pig thought he was going to heaven and they all went into the ark all to get out of the rain the animals went in 8 by 8.hurrah hurrah x2 the animals went in 8 by 8.the turtle thought he was coming late and they all went into the ark all to get out of the rain the animals went in 9 by 9.hurrah hurrah x2 the animals went in 9 by 9.marching up in a long straight line and they all went into the ark all to get out of the rain the animals went in 10 by 10.hurrah hurrah x2 the animals went in 10 by 10.the last one up was the little red hen and they all went into the ark all to get out of the rain
there was plate tectonic movement
Everything went well
The unclean animals.
bears.
twentyfive plus twenty plus one 3rd is 15 so 60 animals
none
Large, active reptiles, such as non-avian dinosaurs, went extinct before the start of the Cenozoic. Hence, dinosaurs, pterosaurs, and other such reptiles are not characteristic of the Cenozoic.
Ammonites went extinct at the end of the Cretaceous Period.
my period came on 11/21/12 and went off 11/22/12
sometimes it maters if the animals went crazy or not on the zookeeper.