Communities

Writing
Writing
Codidact Meta
Codidact Meta
The Great Outdoors
The Great Outdoors
Photography & Video
Photography & Video
Scientific Speculation
Scientific Speculation
Cooking
Cooking
Electrical Engineering
Electrical Engineering
Judaism
Judaism
Languages & Linguistics
Languages & Linguistics
Software Development
Software Development
Mathematics
Mathematics
Christianity
Christianity
Code Golf
Code Golf
Music
Music
Physics
Physics
Linux Systems
Linux Systems
Power Users
Power Users
Tabletop RPGs
Tabletop RPGs
Community Proposals
Community Proposals
tag:snake search within a tag
answers:0 unanswered questions
user:xxxx search by author id
score:0.5 posts with 0.5+ score
"snake oil" exact phrase
votes:4 posts with 4+ votes
created:<1w created < 1 week ago
post_type:xxxx type of post
Search help
Notifications
Mark all as read See all your notifications »
Q&A

Is this subspeciation plausible?

+0
−0

Below is a diagram showing transverse cross sections of skulls representative of the two subspecies (A and B) of the Trilateral* species. Is it plausible that such obvious differences "“ noting the rest of their morphology and physiology is essentially identical "“ could be found within the same species?

Diagram of Trilateral A and B skull/brain cross section

* A placeholder name.

Background

Trilaterals are quadrupedal sophonts a little smaller than chimpanzees, and have triple hemispheric (left, right, and posterior, as shown) brains consistent with a body plan evolved from radially symmetrical ancestors. Their 'head' sits atop a narrower, flexible thorax without a discernable neck; a hip-like structure at the base of the trunk supports four legs and two arms.

Trilateral A is the dominant subspecies; B evolved in parallel in geographic isolation. They are capable of interbreeding and producing fertile offspring. There is no statistically significant difference in skull volume or intelligence among mature samples from either population.

History
Why does this post require attention from curators or moderators?
You might want to add some details to your flag.
Why should this post be closed?

This post was sourced from https://worldbuilding.stackexchange.com/q/101272. It is licensed under CC BY-SA 3.0.

0 comment threads

0 answers

Sign up to answer this question »