Testudines vs order Testudinata

Testudines and order Testudinata both are nouns.

Word	Noun	Adjective	Verb	Adverb
Testudines	Yes	No	No	No
order Testudinata	Yes	No	No	No

As nouns, Testudines and order Testudinata are synonyms defined as:

Other synonyms of Testudines include Chelonia, order Chelonia, order Testudines, Testudinata.

Testudines (noun)	order Testudinata (noun)
tortoises and turtles	tortoises and turtles