Coltac

Coltac is a class M planet located in the Alpha Helios star system in the the galaxy's Alpha or Beta Quadrant.

Geography
Coltac is a planet covered with tropical rainforests and appears completely green from orbit. Animal lifeforms include a wide variety of large dinosaurs and pterosaurs.

History
In 2266, the USS Enterprise (NCC-1701) launched its all-terrain shuttlecrawler Space Bug X-4 to explore the surface of Coltac. James T. Kirk sought Coltac herbs that were key to developing an antidote to a creeping sickness plague.

The landing party was forced to use phasers to stun a massive, bipedal, horned dinosaur whose head was as large as the shuttle. This animal easily uprooted trees more than 12-feet thick. Later, a pterosaur dive-bombed the shuttle as the crew were collecting herb samples, but Kirk was able to keep the animal at bay with his phaser until the team could take off. 

Lifeforms

 * Coltac herb
 * dinosaurs
 * pterosaurs