The Dinozords were the first zords used by the Mighty Morphin' Power Rangers. They were called on whenever Rita Repulsa grew her monsters to giant size after the rangers beat them in their normal size. After Lord Zedd came to Earth, the Dinozords were greatly weakened and almost destroyed, but were then used as the foundation of the more powerful Thunderzords.
The Tyrannosaurus Dinozord was the zord of Jason Lee Scott, the Red Ranger, and was the strongest of all the Dinozords. It could fight on its own using its claws and tail in battle, even taking on the Dragonzord on its own. The Tyrannosaurus Dinozord could unleash powerful roars, that created seismic blasts. In the Megazord formation, it formed the head and torso and when not in use, it was hidden below the Earth. It was later used to create the Red Dragon Thunderzord.
Saber-Toothed Tiger Dinozord
The Saber-Toothed Tiger Dinozord was the zord of Trini Kwan, the Yellow Ranger and was by far the fastest moving of the Dinozords. It had a laser cannon on its tail, but it could also attack with its fangs. In the Megazord formation, it formed the right leg and when not in use, it was hidden in a deep jungle. It was later used to create the Griffin Thunderzord.
The Triceratops Dinozord was the zord of Billy Cranston, the Blue Ranger. It was able to fire laser blasts from a twin cannon on its tail and send out chain-link power cables form its horns in order to subdue its opponents. In the Megazord formation, it formed the left leg and when not in use, it was hidden in a desert. It was later used to create the Unicorn Thunderzord.
The Pterodactyl Dinozord was the zord of Kimberly Ann Hart, the Pink Ranger, and the only Dinozord capable of flying. It could fire twin lasers which resembled lightning bolts when used on its own and in the Megazord formation, it formed the chest plate. When not in use, the Pterodactyl Dinozord was submerged in a volcano for hiding and was later used to create the Firebird Thunderzord.
The Mastodon Dinozord was the zord of Zack Taylor, the Black Ranger. It was able to unleash freezing blasts of cold air and mist at opponents. In the Megazord formation, it formed the arms and shield and when it was not in use, it was hidden in the Artic. The Mastodon Dinozord was later used to create the Lion Thunderzord.
The Dragonzord is the zord of Tommy Oliver, the Green Ranger, and later Jason temporarily after Tommy lost his powers for a time. This zord could be summoned from the ocean and controlled by the music played on the Dragon Dagger (Though its cockpit was used at times). Tommy first used the Dragonzord when he was being controlled by Rita Repulsa to attack Angel Grove, but after the spell on him was broken, Tommy and the Dragonzord began fighting alongside the rangers. After Tommy lost the powers of the Green Ranger again and became the White Ranger, the Dragonzord remained untouched at the bottom of Angel Grove Harbor. But it made its return after the Wizard of Deception created a clone of Tommy and granted him the Green Ranger powers, then had him steal the Dragon Dagger. The clone summoned the Dragonzord and had it attack Angel Grove, then battle the Tigerzord. But after the clone was freed from the Wizard's control, he returned the Dragonzord to the sea where it has presumably remained ever since. While formidable on its own and even capable of matching the Megazord, the Dragonzord could combine with the Mastodon, Triceratops, and Saber-Toothed Tiger Dinozords to form Dragonzord Battle Mode or the Megazord to form the Mega Dragonzord. The Dragonzord was able to fire missiles from its fingers and had a large drill on its tail that it could fight with.
Titanus was a giant brachiosaurus based Carrierzord that the Power Rangers first met when they needed the Thunder Slingers that he guarded in order to fight the Super Putties. Though he at first opposed them, Zordon told them that Titanus would be a powerful ally in the future. When they had trouble fighting a monster, the Rangers could call on Titanus, who would then combine with the Mega Dragonzord, allowing them to form the powerful Ultrazord. After the rangers gained the Thunderzords, Titanus was replaced by Tor the Shuttlezord, but he returned later after the rangers gained their new Ninjazords. He could then combine with the Ninja Megafalconzord to form the Ninja Ultrazord, as well as the Shogun Megafalconzord to form the Shogun Ultrazord. However the rangers lost Titanus after Master Vile used the Orb of Doom to turn back time. Whenever Titanus combined with a Megazord, his tail would split into two cannons that would be mounted on his shoulders.
When the Dinozords combine, they first form Megazord Tank Mode. This formation traveled on treads from the Triceratops and wheels from the Saber-Toothed Tiger and was armed with a set of cannons from the Mammoth. It could also fire laser blasts from the eyes of all Dinozords with use of all the Rangers' Power Crystals. As time went on, the Tank Mode only served as a minor step in the process of forming the Megazord.
After forming the Tank Mode, the Megazord could then form into battle mode. In this form, it had less energy weapons but made up for it with greater close combat potential. The Megazord could also utilize the Power Sword, which could also be used as an alternate power supply if the main one was unavailable and use the head of the Mammoth Dinozord as a shield. The Power Sword was also often used as a finishing weapon to destroy monsters.
Dragonzord Battle Mode
The Dragonzord Battle Mode was a combination of the Dragonzord and the Triceratops, Saber-Toothed Tiger, and Mammoth Dinozords. Its detatched tail combined with the Dragonzord's chest plate to form the Power Staff, which was used primarily as a hand weapon, but could also be charged with energy to finish off a monster.
The Mega Dragonzord was a combination of the Megazord and the Dragonzord, which becomes head and shoulder armor on the Megazord. This formation was extremely powerful, but was a good deal slower, due to being so top heavy. It had a number of shoulder cannons that normally served as the Dragonzord's finger cannons, but its main attack was a powerful triple energy blast, generated from the Dragonzord symbols on the arms and the Megazord's chest plate, which was powerful enough to wipe out pretty much any enemy.
The Ultrazord is a combination of all seven zords that the Power Rangers first possessed. It was formed by the Mega Dragonzord landing in a hatch on top of Titanus' back. Titanus attaches his claws to the Megazord's hands, the Dragonzord's chest plate attaches to Titanus' front, and the Carrierzord's tail splits and forms into two cannons on his shoulders. The Ultrazord could fire blasts from the Dragonzord's fingers and Titanus' mouth, shoulder cannons, and chest plate.