Did you perhaps mean ornithorhynchus?
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Examples
“Willie, already initiated, hoped to puzzle papa as a platypus ornithoryncus, but was driven to allow that it was a nondescript animal, neither fish, flesh, nor good red-herring, useless, and very fond of grubbing in the mud; and if it were not at Botany Bay, it ought to be!”
Lists
These user-created lists contain the word ‘ornithoryncus’.
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Australian Fauna
endemic species of terra australis
phascogale, wombat, ornithoryncus, wambenger, tuan, potoroo, platypus, echidna, bilby, bandicoot, antechinus, numbat and 101 more...
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Looking for tweets for ornithoryncus.

chained_bear It's OK, bilby, if you want to de-list this. Nobody's proposing deleting any word, even misspelled, that has comments on its page. Nov 22, 2007
bilby Think the ghost issue is still raging in but I'll de-list this one soon anyway.
Nov 22, 2007
bilby Indeed I 'ave. Left out 2, more's the shame!
But I remember a kid called Terry Russell beating me at hangman at primary school with "aunatharinkas". And HE got away with it.
Anyway, see Ornithorhynchus. Nov 22, 2007
mollusque I think you left out an "h". Nov 22, 2007
bilby Better known as platypus. Nov 22, 2007