Evidence from 18 <i>S</i> Ribosomal DNA that the Lophophorates Are Protostome Animals
Kenneth M. Halanych(University of California, Los Angeles), John D. Bacheller(The University of Texas at Austin), Anna Marie A. Aguinaldo(The University of Texas at Austin), Stephanie M. Liva(The University of Texas at Austin), David M. Hillis(The University of Texas at Austin), James A. Lake(The University of Texas at Austin)
Cited by 581
Abstract
The suspension-feeding metazoan subkingdom Lophophorata exhibits characteristics of both deuterostomes and protostomes. Because the morphology and embryology of lophophorates are phylogenetically ambiguous, their origin is a major unsolved problem of metazoan phylogenetics. The complete 18S ribosomal DNA sequences of all three lophophorate phyla were obtained and analyzed to clarify the phylogenetic relationships of this subkingdom. Sequence analyses show that lophophorates are protostomes closely related to mollusks and annelids. This conclusion deviates from the commonly held view of deuterostome affinity.
Related Papers
No related papers found
Powered by citation graph analysis