Worcester, William S
(University of Hawai'i, Honolulu, 1969-12-01)
Lingula is one of the most morphologlcally conservative genera known. Thls brachiopod has remained essentially
unmodified for 350-400 mllllon years (Hyman, 1959. Paine,
1963). It is one of the oldest, if not the oldest, ...