Question

Describe the features that allowed early fishes to invade land.
Scientific Basis:

Describe the fossil evidence in support of this transition.
Scientific Basis:

Answer 1

1. Some of the most important characteristics that allowed amphibians to leave the water were-

# evolution of lungs- homologous to the gas bladder that allows fish to control its buoyancy.

# development of the choanaes- or internal nostrils, this allowed them to get air through their noses using lung ventilation and this way to smell outside of water.

# apparition of the quiridium- like Limbs.

2. The first Jawed vertebrates probably developed during the late ordovician. They are first represented in the Fossil record from the silurian by two groups of fish.
Some Fossil sites that produced notable fish fossils-
# abbey wood SSSI
# burgess shale
# Dura den
# gogo formation
# fur formation