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genus Sphenodon

genus Sphenodon

1 9.9
A group of reptiles that includes the tuatara from New Zealand
  • noun
  • /ˈdʒɛnəs ˈsfɛnədɒn/
  • Specialized
: género Sphenodon
  • The tuatara, belonging to the genus Sphenodon, is often referred to as a living fossil due to its ancient lineage.

Examples

  • Rhynchocephalians (beakheads) form the sister group to the squamates (lizards and snakes) and are represented by the extant single genus Sphenodon (the tuataras) today.

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  • Scientists study the genus Sphenodon to understand the evolution of reptiles in isolation.

  • In New Zealand, the genus Sphenodon is known for its unique adaptations to the environment.

Synonyms

Sphenodon
vsgenus Sphenodon
  • Specialized
1 9.9

A reptile like a lizard living only in New Zealand and the last of an ancient group

uses plural reference to the species rather than the singular form

Surface Forms

Morphology

genus + Sphenodon

This phrase is fully compositional: it names the taxonomic rank ('genus') followed by the specific genus name ('Sphenodon'), so a learner who knows both constituents will understand it refers to the biological genus Sphenodon. There is no idiomatic or metaphorical shift and the pattern 'genus + name' is cross-linguistically regular, making the meaning transparent to learners.

Etymology

Genus Sphenodon comes from old Greek parts sphen and odon, meaning 'wedge' and 'tooth'. The name points to the tuatara's wedge-like teeth and jaw, so it helps you remember this group of New Zealand reptiles.