Where are our lore writers at? Oortians do not have belly buttons as they do not gestate their offspring.
Adolescent Oortians are what we are most familiar with. The bipedal humanoid life forms which are found frolicking in forests and meadows, slithering around in caves, and slingshotting themselves throughout a variety of atmospheres.
Upon reaching adulthood, an oortian begins seeking reproduction. To do so requires a death of the most heinous nature. Oortians must be impacted into sediment by a meteor for the next stage of their life cycle. This deviating force triggers a response in the cell structure causing the compacted remains to cannibalize, resulting in extremely dense parasitic larvae. One oortian may result in as many as 11 larvae.
During the larval stage the Oortlet feeds off of the bioluminescent mycelium found coating and thought the meteors. The oortstone core of a meteor provides enough heat to keep the larvae from freezing in even the coldest of environments.
After one week the larvae emerge from under the meteor and perch themselves on tall blades of grass. Grazing roadrunners feast on the tiny Oortlet larvae. The roadrunner acts as a sustainance source for the next 40-60 days while the larvae grows from a few millimeters to a sphere between one and two centimeters in diameter. Once mature the larvae detach from the lower intestines to be excreted back into the atmosphere begining the Hopper stage of life. The transition from Hopper to adolescent Oortian has yet to be observed due to the explosive nature upon observation.