
1) Labyrinthodontia
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https://www.crosswordclues.com/clue/labyrinthodonta

• (n. pl.) An extinct order of Amphibia, including the typical genus Labyrinthodon, and many other allied forms, from the Carboniferous, Permian, and Triassic formations. By recent writers they are divided into two or more orders. See Stegocephala.
Found on
http://thinkexist.com/dictionary/meaning/labyrinthodonta/
Lab`y·rin`tho·don'ta noun plural [ New Latin See
Labyrinthodon .]
(Paleon.) An extinct order of Amphibia, including the typical genus Labyrinthodon, and many other allied forms, from the Carboniferous, Permian, and Triassic formations. By recent writers they are divided into two or ...
Found on
http://www.encyclo.co.uk/webster/L/2
No exact match found.