It was one of the early crustaceans called Trilobites.
"A Pair of Blue Eyes" by Thomas Hardy
The Trilobite was the most arresting figure in the Cambrian sea, and its fortunes deserve a paragraph.
"The Story of Evolution" by Joseph McCabe
You know better than I do his admirable labours on the development of trilobites, and his most important work on his Lower or Primordial Zone.
"More Letters of Charles Darwin" by Charles Darwin
Trilobites, change of genera and species of.
"More Letters of Charles Darwin Volume II" by Charles Darwin
How far off yet is the trilobite!
"Essays, Second Series" by Ralph Waldo Emerson
A great calamity, for instance, is as old as the trilobites an hour after it has happened.
"The Atlantic Monthly, Volume 1, Issue 2, December, 1857" by Various
Group of Cambrian Trilobites.
"The Ancient Life History of the Earth" by Henry Alleyne Nicholson
Eye of trilobites, 135.
"On the Genesis of Species" by St. George Mivart
The trilobites, as he so well dubbed them, ah in control again.
"Aladdin & Co." by Herbert Quick
Compare this fossil trilobite of normal proportions with these others which have suffered distortion.
"Fragments of science, V. 1-2" by John Tyndall