If you're looking for manga similar to Dynamic Super Robots Soushingekki, you might like these titles.
On a primitive planet with fauna similar to Terran dinosaurs and Ice Age critters, one of the angolmois energy capsules spread by the explosion of the Nemesis has affected the locals. A gang of evil dinosaurs have been transformed into Destrons, and a battered Lioconvoy is too injured to stop them. So he transfers his energy into a mammoth named Big, charging him with continuing the good fight.
All across the universe, the forces of the Maximals and Predacons are at war... and the Maximals are on the losing end! At the central headquarters of their army, a Convoy receives report after disastrous report from the battlefield, and thinks of the small team of warriors led by Lio Convoy, fighting to keep the Angolmois energy of the planet Gaea out of the hands of Galvatron...
Years ago, after watching his family die at the hands of the Vegan empire, Duke Fleed managed to escape, stealing the powerful UFO Grendizer that the enemy used to destroy his planet in the process. Eventually ending up on Earth, the boy was adopted by Dr. Umon and given the name Daisuke, intent on living out the rest of his life in peace. However, when his father and the mecha pilot Kouji Kabuto realize that the Vegan empire has arrived at Earth to repeat history, Daisuke is forced back into the pilot's seat to save his new home. Alongside Kouji's flying saucer, can Daisuke and his Grendizer stop the fleet and save the world?