[1] : The Collaborative International Dictionary of English v.0.48

petrogale \petrog"ale\ p-etro^g".al=e, n. nl.,
   fr. gr. pe`tra a rock + galh^ a weasel. zool.
   any australian kangaroo of the genus petrogale, as the rock
   wallaby petrogale penicillata.
   1913 webster
see also:
petrogale petrogale penicillata 

[2] : WordNet (r) 2.0

petrogale
     n : rock wallabies syn: genus petrogale
see also:
genus petrogale 

Petrogale >> P Words
Petrogale, definition of term: Petrogale
petrogale_pag1.html