Sphenodontia

From Wikipedia, the free encyclopedia

(Redirected from Sphenodontida)
Jump to: navigation, search
Sphenodonts
Fossil range: Triassic-Recent
Sphenodon
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Order: Sphenodontia
Williston, 1925
Families
  • Gephyrosauridae
  • Pleurosauridae
  • Sphenodontidae

Sphenodontia is an order of lizard-like reptiles that includes only one living genus, the tuatara (Sphenodon). Despite its current lack of diversity, the Sphenodontia at one time included a wide array of genera in several families, and represents a lineage stretching back to the Mesozoic Era.

Sphenodontia, once a wastebin taxon containing a diverse array of unrelated reptiles (notably the rhynchosaurs), today consists of three families: the possibly paraphyletic Gephyrosauridae, the Pleurosauridae, and the Sphenodontidae. Sphenodontidae is the family which contains all modern tuatara, as well as a number of extinct subfamilies.

Classification follows Wu (1994), Evans et al. (2001), and Apesteguia & Novas (2003) [1].

Wikimedia Commons has media related to:


Advanced Search
Included Web Search Engines


Safe Search

close

Top Matching Results

Occasionally Search.com will highlight specialized results that are based on the context of your query. Examples of specialized results include specific links to news, images, or video.

Top Matching Results may highlight information from other Search.com pages, content from the CNET Network of sites, or third party content. The listings are based purely on relevance. Search.com does not receive payment for listings in this section but our partners that provide this data may get paid for listing these products.

Sponsored Links

This section contains paid listings which have been purchased by companies that want to have their sites appear for specific search terms and related content. These listings are administered, sorted and maintained by a third party and are not endorsed by Search.com.

Search Results

Search.com sends your search query to several search engines at one time and integrates the results into one list which has been sorted by relevance using Search.com's proprietary algorithm. You can customize the list of search engines included in your metasearch from the preferences.

The search engines that are used in your metasearch may allow companies to pay to have their Web sites included within the results. To view the Paid Inclusion policy for a specific search engine, please visit their Web site. Search.com does not accept payment or share revenue with any search engine partner for listings in this section.