Webster's Revised Unabridged Dictionary
NL., fr. Gr. western + , , a bird
Chambers's Twentieth Century Dictionary
Gr. hesperos, western, ornis, a bird.
The less numerous Hesperornis group were large and powerful divers.
"The Story of Evolution" by Joseph McCabe
They've named him the "Hesperornis," which means "western bird.
"The Adventures of a Grain of Dust" by Hallam Hawksworth
Pause and ponder: who could write
A triolet or roundelay
While a Megatherium yawped all night
And a Hesperornis yamped all day,
While now and again the bray sonorous
Of Glyptodon Asper swelled the chorus?
"Extinct Monsters" by Eugene Field