Identify the appropriate time period where vascular plants with woody tissues, seeds, and veins shared the land with spiders, sc
orpions, insects, and crustaceans, while jawed fish cruised the oceans and the first amphibians left water to visit land. middle proterozoic late mesozoic. early cenozoic. middle paleozoic.
Answer is Middle Paleozoic era. Paleozoic era was in 542 Ma - 245 Ma and it has 6 periods as Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian. 360-280 Ma - forming of vascular plants with woody tissues, seeds and veins. 430 - 410 Ma - forming of jawed fishes and first amphibians. 420 Ma - forming of scorpions 360 Ma - forming of crustaceans.
The cerebrum is the largest portion of the brain, and the longitudinal fissure is what divides the 2 hemispheres. But I'd think your answer is 'cerebrum'.
