Denkir IV
Denkir IV was the fourth planet in its star system, known for its aquatic lifeforms.

The study of the evolution of intelligent life on Denkir IV was a common lesson in classrooms on both the  and Deep Space 9. A large diagram depicting various aquatic lifeforms and their biological relationships was often seen on display. (, )

Lifeforms 
 Delphoidia
 Delphoidia cochrani
 Delphoidia cochrani tempus
 Delphoidia cochrani obliquidens
 Delphoidia moroboshi
 Delphoidia moroboshi lum
 Oceosauroida
 Oceosauroida mendo
 Oceosauroida mendo shinobu
 Oceosauroida mendo shutaro
 Neopictis
 Neopictis spinotap
 Neopictis spinotap cochrani
 Neopictis gourami
 Squaluformus
 Squaluformus vino
 Squaluformus vino shiro
 Vermacelli alfredo
 Oniboshi lum
 Oniboshi lum ran
 Oniobshi benten

See also 
 
 Denkir II

Appendices

Background information 
The okudagram was first seen in the nursery in "The Child". It later appeared in the schoolroom aboard the Enterprise-D in "The Offspring", "Reunion", "Imaginary Friend", "Rascals", and "Masks". It also appeared in the biolab in "New Ground" and in the classroom aboard Deep Space 9 in "Cardassians".

The diagram was created by Rick Sternbach, illustrating the "evolution of intelligent life on the planet Denkir IV", from a (non-Trek) science fiction story he wrote.

The term "Denkir" (which appeared a number of times) dates back to a non-Trek related SF story written by Rick Sternbach.  He created some art for the story, including a painting meaning to depict Denkir IV from the perspective of its inner moon, which he later re-used as set artwork. Copies of this painting can be found displayed aboard the  in the observation lounge and in guest quarters. () Marla Aster also had a copy of the painting in her quarters aboard the Enterprise-D. ()

Visual art
Planets