Series Episodes
Dinosaur Squadron Koseidon
Dinosaur Squadron Koseidon is the 3rd entry in the Tsuburaya Dinosaur Trilogy
Kosideon title card
Format: TV Drama
Created by: Tsuburaya Productions
Starring: Tetsuya Onishi
Sankei Keiji
Miyu Ichijo Nozomi
Takako Kawasaki
Nanami Murano
Sato GaJiro
Kusano Daigo
Hiroyuki Kumagai
Michiko Nagahama
Hideo Kanze
Opening Theme: Dinosaur Squadron Koseidon
Ending Theme: Koseidon Corps March
Country Of Origin Japan
Number Of Episodes 52
Running Time approx. 30 minutes
Original Channel Tokyo 12
Original Air Date July 7, 1978 - June 29, 1979
Preceded by Trilogy: Dinosaur Great War Izenborg
Succeeded by Production: The☆Ultraman

Dinosaur Squadron Koseidon (恐竜戦隊コセイドン Kyōryū sentai koseidon) was a 1978 tokusatsu series created by Tsuburaya Productions. Although not the official title, after the 41st episode of the series during airing, the shows title name changed to Dinosaur Squadron Koseidon Fight Human Cannon Koseider ( 恐竜戦隊コセイドン 戦え 人間大砲コセイダー Kyōryū sentai koseidon tatakae ningen taihō koseidā)


Set in the future where time travel is made possible through the discovery of Tachyon, a particle that moves faster that light, humanity can freely go back and forth between the Mesozoic, Cretaceous and the present, making colonies on Cretaceous earth. The Time Dimension Control Bureau boasts a special team, the Time G Men · Koseidon Corps, driving the huge time machine Koseidon. They protect the safety of Cretaceous and time travel.

In 2001, Japan was attacked by heat rays and freeze rays, and it turns out that the attack is from the Cretaceous. In response to this abnormal situation, Koseidon requested by the Time Dimension Control Bureau and started investigation in Cretaceous. They encounter a fugitive from outside the Earth -- Princess Altasiya and her robot Bikuraji. The invader Alien Godomess set their sights on Earth as an invasion target and the Koseidon troops will fight to stop the invasion of the Earth.



Shows and Films
Showa Series Ultra Q | Ultraman | Ultraseven | Return of Ultraman | Ultraman Ace | Ultraman Taro | Ultraman Leo | Ultraman 80
Heisei Series Ultraman Tiga | Ultraman Dyna | Ultraman Gaia | Ultraman Cosmos | Ultra Q: Dark Fantasy | Ultraman Nexus | Ultraman Max | Ultraman Mebius | Ultraseven X | Ultra Galaxy Mega Monster Battle | Ultra Galaxy Mega Monster Battle: Never Ending Odyssey | Ultraman Retsuden | Neo Ultra Q | New Ultraman Retsuden | Ultraman Ginga | Ultraman Ginga S | Ultraman X | Ultraman Orb | Ultraman Zero: The Chronicle | Ultraman Geed | Ultraman Orb: The Chronicle | Ultraman R/B | Ultraman New Generation Chronicle
Reiwa Series Ultraman Taiga
Outside of Japan Ultraman: The Adventure Begins | Ultraman: Towards the Future | Ultraman: The Ultimate Hero
Original Video and TV Special Ultra Fight | Ultraman vs. Kamen Rider | Ultraman Nice | Heisei Ultraseven | Ultraman Neos | Ultraman Super Fighter Legend | Ultra Idemitsujin | Ultra Zone
Showa Movies Ultraman: Monster Movie Feature | Ultraman, Ultraseven: Great Violent Monster Fight | The 6 Ultra Brothers vs. The Monster Army | Ultraman: Great Monster Decisive Battle | Ultraman (1979) | Ultraman ZOFFY: Ultra Warriors vs. the Giant Monster Army | Ultraman Story
Heisei Movies Ultra Q The Movie | Ultraman Zearth | Ultraman Zearth 2 | Revive! Ultraman | Ultraman Tiga & Ultraman Dyna | Ultraman Tiga, Ultraman Dyna, & Ultraman Gaia | Ultraman Tiga: The Final Odyssey | Ultraman Cosmos: The First Contact | Ultraman Cosmos 2 | Ultraman Cosmos Vs Ultraman Justice | ULTRAMAN (2004) | Ultraman Mebius & the Ultra Brothers | Super 8 Ultra Brothers | Ultra Galaxy Legends The Movie | Ultraman Zero The Movie | Ultraman Saga | Ultraman Ginga S The Movie | Ultraman X The Movie | Ultraman Orb The Movie | Ultraman Geed The Movie | Ultraman R/B The Movie
Reiwa Movies Shin Ultraman
Spin-offs Ultraman Tiga Gaiden: Revival of the Ancient Giant | Ultraman Dyna: The Return of Hanejiro | Ultraman Gaia: Gaia Again | Ultraman Mebius Gaiden: Hikari Saga | Ultraman Mebius Gaiden: Armored Darkness | Ultraman Mebius Gaiden: Ghost Rebirth | Ultra Galaxy Legend Gaiden: Ultraman Zero vs. Darklops Zero | Ultraman Zero Gaiden: Killer the Beatstar | Ultra Zero Fight | Ultra Fight Victory | Ultraman Orb THE ORIGIN SAGA | Ultra Fight Orb | Ultra Galaxy Fight: New Generation Heroes
Other Series Captain Ultra | Mighty Jack | Operation: Mystery | Mirrorman | Redman | Triple Fighter | Emergency Directive 10-4·10-10 | Iron King | Fireman | Jumborg Ace | Mirror Fight | Army of the Apes | Pro-Wres no Hoshi Azteckaiser | Dinosaur Expedition Born Free | Dinosaur War Aizenborg | Dinosaur Squadron Koseidon | Denkou Choujin Gridman | Superhuman Samurai Syber-Squad | Mirrorman REFLEX | Bio Planet WoO | Mirror Fight 2012
Anime The☆Ultraman | Ultraman Kids | Ultraman Graffiti: Wild! Ultra Country | Ultraman: Super Fighter Legend | Ultra Nyan | Denkou Choujin Gridman: boys invent great hero | The・Ultraman: Jackal vs. Ultraman | Kaiju Sakaba Kanpai! | Kaiju Girls | SSSS.GRIDMAN | ULTRAMAN (2019)
Outlaw Space Warriors 2000 | Project Ultraman | Dragon Force: So Long Ultraman | Dragon Force: Rise of Ultraman
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