rhynchocephalia การใช้

• The Rhynchocephalia originated by the Middle Triassic period and were distributed worldwide.
• Lizards are most closely related to a group called Rhynchocephalia, which includes the tuatara.
• Many disparately related species were subsequently added to the Rhynchocephalia, resulting in what taxonomists call a " wastebasket taxon ".
• However, today Rhynchocephalia is used to include " Gephyrosaurus " and Sphenodontia, while Sphenodontia excludes the former.
• At the time, Cope considered Aetosauria to belong to Rhynchocephalia, an order of reptiles that includes the living tuatara.
• Rhynchocephalia, which includes the tuatara and their extinct relatives, can presently only be found on some small islands off New Zealand.
• In some phylogenies " Eosuchia " has been treated ( probably erroneously ) as a sister lepidosaur taxon to Squamata and Rhynchocephalia.
• As such, it is usually dumped in favour of a new, more restrictive name ( for example, Rhynchocephalia or Thecodontia ), or abandoned altogether ( for example, " Simia " ).
• In a phylogenetic study published in 2013, the two Italian researchers Silvio Renesto and Massimo Bernardi confirmed that this species should be classified close to the common ancestor of the Squamata and Rhynchocephalia, i . e . of the snakes and lizards, one of the most common groups of reptiles encountered today.