order pseudoscorpionida

NOUN
23 LETTERS · STARTS WITH O

order pseudoscorpionida is a valid 23-letter word worth 31 points in Scrabble and 36 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
O1R1D2E1R1P3S1E1U1D2O1S1C3O1R1P3I1O1N1I1D2A1
1 + 1 + 2 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 2 + 1 + 1 + 3 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 2 + 1 =31 PTS
DOUBLE WORD → 62TRIPLE WORD → 93
MEANING

What does order pseudoscorpionida mean?