User Tools

    To create and edit articles, please register and log-in

Main Menu

Main menu
Click categories to expand

A-Z listingplugin-autotooltip__plain plugin-autotooltip_bigA-Z listing

This is an alphabetical index of all content pages.

Other categories



Also see

Importance Ratings
Curator's rationale

Wikenigma supports:

Feeds etc
rss / xml feed
sitemap file
A-Z listing (archived)

Auto-Translate Site
Indexed under : Life Sciences / Zoology

Wikenigma - an Encyclopedia of Unknowns Wikenigma - an Encyclopedia of the Unknown

Dinosaur 'sails'

Several species of extinct dinosaurs independently evolved large, elaborate, sail-like structures on their backs. Examples include Edaphosaurus , Dimetrodon and Secodontosaurus

The function of the 'sails' has been investigated since the first days of their discovery. Theories include :

  • As a courtship display
  • For thermo-regulation
  • For food storage
  • For camouflage
  • As a 'sound' display
  • Protection against predators
  • Wind-powered sailing over water
  • As a backbone support structure

The explanations, which are not mutually exclusive, remain highly debated.

Note: Several modern-day lizards and amphibians have 'sails' - though in general much less prominent than the dinosaurs. See Wikipedia

    Share this page :

Dear reader : Do you have any suggestions for the site's content?

Ideas for new topics, and suggested additions / corrections for old ones, are always welcome.

If you have skills or interests in a particular field, and have suggestions for Wikenigma, get in touch !

Or, if you'd like to become a regular contributor . . . request a login password. Registered users can edit the entire content of the site, and also create new pages.

( The 'Notes for contributors' section in the main menu has further information and guidelines etc.)

Automatic Translation

You are currently viewing an auto-translated version of Wikenigma

Please be aware that no automatic translation engines are 100% accurate, and so the auto-translated content will very probably feature errors and omissions.

Nevertheless, Wikenigma hopes that the translated content will help to attract a wider global audience.

Show another (random) article