Baroque
Crinoids and ammonites were the dominant marine life forms during the Mississippian stage of the Carboniferous period.
The piano/pianoforte is the keyboard instrument that succeeded the harpsichord. It rose in popularity during the late stages of the Classical period and beginnings of the Romantic era.
violin
The West
I know that the angiosperms were most dominant during the cretaceous period but im not too sure about the dinosaurs dominant era. I would assume they were both dominant in the same era but I am not 100% sure.Read more: http://wiki.answers.com/Dinosaurs_and_angiosperms_were_dominant_lineages_during_with_geologic_era#ixzz1G5bqBpQR
Ammonites are very common fossils from the Jurassic Period. They were dominant in the ocean during and before the Jurassic Period.
Late Horizon
Dinosaurs.
My cousin lenny
the piano
Metazoans were abundant during the Vendian Period.
fish