February 2013
Columbia Electronic Encyclopedia, 6th Edition;Feb2013, p1
Reference Entry
Sphenodon: see tuatara.


Related Articles

  • Sphenodon.  // Columbia Electronic Encyclopedia, 6th Edition;Q1 2017, p1 

    Sphenodon: see tuatara.

  • Neglected taxonomy and continuing extinctions of tuatara (Sphenodon). Daugherty, C.H.; Cree, A. // Nature;9/13/1990, Vol. 347 Issue 6289, p177 

    Describes a pattern of genetic and morphological differentiation in the New Zealand tuatara Sphenodon which supports a taxonomy identifying two extant species. Results of failure to differentiate between species; Need for increased conservation efforts for other Sphenodon species.

  • Growth patterns and ontogenetic variation of the teeth and jaws of the Middle Jurassic sphenodontian Cynosphenodon huizachalensis (Reptilia: Rhynchocephalia). Reynoso, Victor-Hugo // Canadian Journal of Earth Sciences;Apr2003, Vol. 40 Issue 4, p609 

    Deals with a study which compared growth patterns in teeth and jaws of the middle jurassic sphenodontian Cynosphenodon huizachalensis to those of the extant Sphenodon. Development of the lower dentition; Dentary development; Comparison of tooth and jaw development; Conclusions.

  • Tuatara tango.  // Discover;Apr89, Vol. 10 Issue 4, p14 

    Describes the sole surviving member of the reptilian order of Sphenodons, New Zealand's tuatar. Predatory rats have killed off part of the tuatara population; Inefficient mode of reproduction.

  • Project... Evolutionary Tree.  // Monkeyshines on Health & Science;Jun97 Ornithology (Study of Birds), p22 

    The article presents an evolutionary tree depicting a sequence of reptiles and birds. It includes different species of ruling reptile such as alligators and crocodiles. In the stem reptiles list are turtles, sphenodon. Others reptiles included are snakes and lizards.

  • Sexual Shape Dimorphism in Tuatara. Herrel, Anthony; Schaerlaeken, Vicky; Moravec, Jiří; Ross, Callum F. // Copeia;Dec2009, Vol. 2009 Issue 4, p727 

    The tuatara, Sphenodon punctatus, is known to exhibit a male-biased sexual size dimorphism, often attributed to the territorial behavior of males. Our data based on preserved specimens from museum collections also show a previously undocumented dimorphism in head and limb shape in Sphenodon,...

  • Genetic diversity and taxonomy: a reassessment of species designation in tuatara ( Sphenodon: Reptilia). Hay, Jennifer M.; Sarre, Stephen D.; Lambert, David M.; Allendorf, Fred W.; Daugherty, Charles H. // Conservation Genetics;Jun2010, Vol. 11 Issue 3, p1063 

    The identification of species boundaries for allopatric populations is important for setting conservation priorities and can affect conservation management decisions. Tuatara ( Sphenodon) are the only living members of the reptile order Sphenodontia and are restricted to islands around New...

  • Senior Reptiles.  // Time;10/27/1952, Vol. 60 Issue 18, p79 

    The article focuses on the plan to deliver Tuataras or Sphenodon punctatus to zoos in New York, Chicago, Illinois and San Diego, California. The reptile, which is found only in New Zealand, is believed to be numerous 200 million years ago. The significant decline in their population is...

  • Fast evolving animal is a reptile.  // New Scientist;3/29/2008, Vol. 197 Issue 2649, p17 

    The article discusses a study led by David Lambert of the University of Auckland that reveals that New Zealand's tuatara, Sphenodon punctatus, is the fastest-evolving animal known. Lambert's team analyzed mitochondrial DNA sequences from 650 to 8,000-year-old tuatara remains and found that the...


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