pseudoscorpionida

NOUN
17 LETTERS · STARTS WITH P

pseudoscorpionida is a valid 17-letter word worth 25 points in Scrabble and 30 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
P3S1E1U1D2O1S1C3O1R1P3I1O1N1I1D2A1
3 + 1 + 1 + 1 + 2 + 1 + 1 + 3 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 2 + 1 =25 PTS
DOUBLE WORD → 50TRIPLE WORD → 75
MEANING

What does pseudoscorpionida mean?