Memory Alpha
Memory Alpha
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** [[Iyaaran]]
 
** [[Iyaaran]]
 
** [[J'naii]]
 
** [[J'naii]]
** [[Jaheel's species]]
 
 
** [[Jarleth's species]]
 
** [[Jarleth's species]]
 
** [[Jem'Hadar]]
 
** [[Jem'Hadar]]

Revision as of 15:26, 1 November 2008

The cranial ridges, also referred to as exocranial ridges or cranial plates are bony plates on the surface of the forehead on many humanoid species. Some species, such as Humans, Vulcans, and the ancient humanoids do not possess visible cranial ridges.

Klingon-Human hybrids generally inherit cranial ridges from their Klingon parent, although they are less pronounced. (VOY: "Nothing Human")

In 2154, the Klingon augment virus, and the subsequent cure, caused many Klingons to lose their cranial ridges and become more like "Humans." This would be partially cured via cranial reconstruction. (ENT: "Divergence")

As a child, B'Elanna Torres was often mocked and joked at because of her Klingon-inherited cranial ridges. She was referred to by Daniel Byrd as "Miss Turtlehead." (VOY: "Juggernaut")

The Cytherian encountered by the USS Enterprise-D in 2367 was fascinated by Worf's prominent cranial plate, among other things. (TNG: "The Nth Degree")

When he de-evolved due to Barclay's Protomorphosis Syndrome, Worf's cranial plates thickened by 20%. (TNG: "Genesis")

Death is immediate for a Klingon if the cranial exoskeleton is shattered at the tricipital lobe. (TNG: "Descent")

Ktarians have sharp exocranial ridges, which are also present in Ktarian-human hybrids. If the mother is human, these ridges can cause a rare complication where they become lodged in the uterine wall, as was the case with Naomi Wildman's birth in 2372. (VOY: "Deadlock")

Species with cranial ridges

Background

During Star Trek productions, some aliens were introduced without ridges, but ridges were added in later productions. Some aliens this happened to include: