1) Anapsid 2) Diapsid 3) Diapsida 4) Reptile 5) Scaly 6) Synapsid 1) Class 2) Cold-bloodedly treacherous 3) Like adders and asps 4) Snake-like 
• (n.) One of the Reptilia; a reptile. • (a.) Belonging to the reptiles.
Belonging to the reptiles. ... <geology> Reptilian age, that part of geological time comprising the Triassic, Jurassic, and Cretaceous periods, and distinguished as that era in which the class of reptiles attained its highest expansion; called also the Secondary or Mezozoic age. ... <zoology> One of the Reptilia; a reptile. ... Source: ...
Rep·til'i·an (- a n) adjective Belonging to the reptiles. Reptilian age (Geol.) , Rep·til'i·an noun (Zoology) One of the Reptilia; a reptile. 
[adj] - of or relating to the class Reptilia
adjective of or relating to the class Reptilia