Spirifer hawkinsii Compare and contrast: An illustration of a pair of Spirifer hawkinsii brachiopod fossils collected by Charles Darwin in the Falkland Islands during the Beagle voyage on 22nd March, 1833. A pair of Spirifer hawkinsii brachiopod fossils being held by Stense at the Natural History Museum in London last week. Full story on the Friends of Charles Darwin website. (Thanks, Stense!) By Richard Carter A fat, bearded chap with a Charles Darwin fixation. View all of Richard Carter's posts.