What is a Tuatara and where do they live?

Question

What is a Tuatara and where do they live?

Answer 1

The tuatara is an amniote of the family Sphenodontidae, endemic to New Zealand. The two species of tuatara are the only surviving members of the Sphenodontians which flourished around 200 million years ago,[1] and are in the genus Sphenodon. Tuatara resemble lizards, but are equally related to lizards and snakes, both of which are classified as Squamata, the closest living relatives of tuatara. For this reason, tuatara are of great interest in the study of the evolution of lizards and snakes, and for the reconstruction of the appearance and habits of the earliest diapsids (the group that additionally includes birds and crocodiles).

Tuatara are greenish brown, and measure up to 80 cm (32 in) from head to tail-tip[2] with a spiny crest along the back, especially pronounced in males. Their dentition, in which two rows of teeth in the upper jaw overlap one row on the lower jaw, is unique among living species. They are further unusual in having a pronounced parietal eye, dubbed the "third eye", whose current function is a subject of ongoing research. They are able to hear although no external ear is present, and have a number of unique features in their skeleton, some of them apparently evolutionarily retained from fish. Although tuatara are sometimes called "living fossils", recent taxonomic and molecular work has shown that they have changed significantly since the Mesozoic era.

The tuatara has been classified as an endangered species since 1895[3][4] (the second species, S. guntheri, was not recognised until 1989).[2] Tuatara, like many of New Zealand's native animals, are threatened by habitat loss and the introduced Polynesian Rat (Rattus exulans). They were extinct on the mainland, with the remaining populations confined to 32 offshore islands,[5] until the first mainland release into the heavily fenced and monitored Karori Wildlife Sanctuary in 2005.[6]

The name "tuatara" derives from the Māori language, and means "peaks on the back".[7] As with many other Māori loanwords, the plural form is now generally the same as the singular in formal New Zealand English usage. "Tuataras" remains common in less formal speech, particularly among older speakers.

http://en.wikipedia.org/wiki/Tuatara

Answer 2

a three-eyed lizard from New Zealand.

Answer 3

a tutara is a prehestoric reptile that lives on new zeland it is its own species not a lizard its been around since the jurassic era  

Answer 4

The tuatara is only found in New Zealand and is in danger of becoming extinct!

It is a reptile but not a lizard.

It is the last remaining member of the ancient group of reptiles, Sphenodontia.

Answer 5

It's a kind of lizard-like reptile known as a sphenodontid, and they're restricted to reasonably isolated islands off the coast of New Zealand.  A couple of hundred million years ago sphenodonts could be found all round the world.  They then went out of fashion in most parts.