prototherian

NOUN /,proʊtə'θiriən/
12 LETTERS · 5 SYLLABLES · STARTS WITH P

prototherian is a valid 12-letter word worth 17 points in Scrabble and 18 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
P3R1O1T1O1T1H4E1R1I1A1N1
3 + 1 + 1 + 1 + 1 + 1 + 4 + 1 + 1 + 1 + 1 + 1 =17 PTS
DOUBLE WORD → 34TRIPLE WORD → 51
MEANING

What does prototherian mean?

NOUN · 1 SENSE
1

Primitive oviparous mammals found only in Australia and Tasmania and New Guinea.