Phylum Brachiopoda (Lampshells)
Approximate Number of Species: 335
Largest: Magellania venosa at a length of 5 inches (127 mm)
Smallest: Gwynia capsula at a length of 0.04 inches (1 mm)
References:
Brusca RC & Brusca GJ (2003) Invertebrates (Sinauer Associates, Inc., Publishers, Sunderland, MA) 2nd Ed.
McCammon HM (1973) The ecology of Magellania venosa, an articulate brachiopod. Journal of Paleontogy 47:266-278.
Logan A, MacKinnon DI, & Phorson JE (1997) Morphology, distribution, life habits and phylogenetic affinities of the Recent brachiopod Gwynia capsula (Jeffreys). P.S.Z.N. 1. Mar. Ecol. 19:239-252.