The Silurian period started off with a mass extinction of 60% of all marine life. During the Silurian bony fishes evolved setting the stage for the Devonian, which is referred to as the "Age of the Fish".
Primitive Fish,Trilobites,Orthocones and Horseshoe crabs lived in the silurian
The Silurian period spans from 443 to 419 million years ago. The earliest dinosaurs evolved 231 million years ago. That means there were no dinosaurs at all during the Silurian.
Learning isn't an evolutionary process. It is something all species are born with.
The writings and ideas of Freud, Darwin, Einstein, and Marx
fish
95 degrees
an evolutionary process.
The evolutionary software process model involves working with the customers. It starts by specifying clear requirements of the software and features suggested by the customer are added later during development.
Reef-building corals
simple plants.
Reef-building corals
diversity